Arsenal boss Mikel Arteta, speaking to Sky Sports: "I'm really disappointed and I am responsible for that. It wasn't good enough. We didn't compete good enough. I tried to warn them [the players] for 48 hours what was coming and how important it was going to be.
"Overall we were nowhere near the level we needed to show. This is football and every game is different. What happened a few days ago [defeated Sheffield United 5-0] is in the bin and in the past.
"We didn't threaten enough. I wanted to see much more from my team. There is a lot to improve.
"The thing we have to take from the game today is how are we going to use this to beat Newcastle on Saturday. Feeling the pain. That's what we have to do now."
On Aaron Ramsdale's performance: "Like every player, every players wants to do their best. We haven't done it and we're out [of the cup]."
'A big win against a good side'
FT: West Ham 3-1 Arsenal
West Ham United
Getty ImagesCopyright: Getty Images
West Ham boss David Moyes, speaking to Sky Sports: "We've done a lot of good things. We've got the goals which we maybe haven't done for the last one or two games. It was a big win against a really good side. I thought the players did a good job defensively. In the main we kept a really good team down to not too many chances.
"Okay, we got a bit fortunate with the first goal but they [Arsenal] are a big threat from set-pieces. We can be that as well.
"We are top of the group in Europe and in the top half of the Premier League table so we're not doing too bad. We are happy."
'Lacklustre' Man Utd
FT: Man Utd 0-3 Newcastle
Clinton Morrison
Former Republic of Ireland striker on BBC Radio 5 Sports Extra
I am so frustrated watching it here, I want Manchester United to give the fans something to shout about - it was so lacklustre.
When crosses are coming into the box there is no Manchester United players in the box. Some players do not know what it is all about to play for Manchester United.
He is under pressure Erik Ten Hag, there is a lot of question marks over him at the minute. Even when they played Brentford they were lacking something and Scott McTominay saved them.
Some of the players are not at the level at the moment.
Post update
FT: Man Utd 0-3 Newcastle
Some stat from Opta....
Manchester United have lost 8+ of their first 15 games in a season for the first time since 1962-63 (9), while they've lost five of their first 10 at home for the first time since 1930-31.
'Tactically Howe got it spot on'
FT: Man Utd 0-3 Newcastle
Clinton Morrison
Former Republic of Ireland striker on BBC Radio 5 Sports Extra
Fully deserved for Newcastle, after the first 10 minutes they were the better team.
Lewis Hall and Tino Livramento was outstanding, credit to Joe Willock too who has been out for a while.
Everyone was all talking about Man United being poor, but tactically Eddie Howe got it spot on.
Anthony Gordon led the line very well and caused problems. Man United are nowhere near it.
Post update
That concludes the ties for tonight. Don't go anywhere, though. We'll have reaction and the quarter-final draw for you ASAP.
FULL-TIME
Man Utd 0-3 Newcastle
Getty ImagesCopyright: Getty Images
Newcastle = sensational.
Manchester United = shocking.
Post update
Man Utd 0-3 Newcastle
We've had two of the added four minutes. There are more empty than full seats now.
'Newcastle have put a shift in'
Man Utd 0-3 Newcastle
Clinton Morrison
Former Republic of Ireland striker on BBC Radio 5 Sports Extra
Getty ImagesCopyright: Getty Images
Newcastle have made changes and have put a shift in.
It is brilliant from Eddie Howe. He has motivated his players unlike Erik Ten Hag who cannot get a tune out of his.
INJURY TIME
Man Utd 0-3 Newcastle
We move into four added minutes.
Aaron Wan-Bissaka marks that by sending a pass straight out of play. Shambolic.
Post update
Man Utd 0-3 Newcastle
How do Manchester United expect to score with nobody in the box?
Antony sends a ball into the area, but despite Marcus Rashford and Rasmus Hojlund being on the pitch they're nowhere.
Post update
Man Utd 0-3 Newcastle
Like Hannibal Mejbri earlier in the game, Bruno Guimaraes throws up his arms to whip up the Newcastle fans. Not sure they need the encouragement to be honest, Bruno.
Get Involved
#bbcfootball, WhatsApp on 03301231826 or text 81111 (UK only, standard message rates apply)
SMS Message: As United fans this is the response to Sunday we feared but expected. Never has a group of players looked so devoid of fight. Season over already. from Jonty
As United fans this is the response to Sunday we feared but expected. Never has a group of players looked so devoid of fight. Season over already.
Post update
Man Utd 0-3 Newcastle
Into the last five minutes. Newcastle are heading for the last eight courtesy of a bit of revenge on the side that denied them the Carabao Cup last season.
Get Involved
#bbcfootball, WhatsApp on 03301231826 or text 81111 (UK only, standard message rates apply)
Getty ImagesCopyright: Getty Images
SMS Message: Why is Eddie Howe risking more injuries with his subs? This game is done. Save Bruno, Wilson and Trippier for bigger challenges. from Chris
Why is Eddie Howe risking more injuries with his subs? This game is done. Save Bruno, Wilson and Trippier for bigger challenges.
Post update
Man Utd 0-3 Newcastle
Not a good few minutes for Bruno Fernandes. He fails to beat the first man with a free-kick into the box and then, from a subsequent attack, he sees a shot from miles out blocked.
YELLOW CARD
Man Utd 0-3 Newcastle
Getty ImagesCopyright: Getty Images
Sofyan Amrabat is booked for fouling Joe Willock. Soon after, he commits another foul right under the ref's nose. Another home player dicing with a red.
Post update
Man Utd 0-3 Newcastle
Clinton Morrison
Former Republic of Ireland striker on BBC Radio 5 Sports Extra
If I wasn't working I would also be leaving the stadium like the Manchester United fans to miss the traffic.
Post update
Man Utd 0-3 Newcastle
The home fans are heading for the exits now.
They left early on Sunday and they're doing so again tonight.
These are pretty grim times for the Red Devils.
YELLOW CARD
Man Utd 0-3 Newcastle
The home side are losing their heads.
Sergio Reguilon kicks the ball away in frustration and gets booked. He doesn't learn, though, and keeps throwing his arm up and chuntering at the ref.
Live Reporting
Phil Dawkes, Emlyn Begley and Neil Johnston
All times stated are UK
'I am responsible'
FT: West Ham 3-1 Arsenal
Arsenal
Arsenal boss Mikel Arteta, speaking to Sky Sports: "I'm really disappointed and I am responsible for that. It wasn't good enough. We didn't compete good enough. I tried to warn them [the players] for 48 hours what was coming and how important it was going to be.
"Overall we were nowhere near the level we needed to show. This is football and every game is different. What happened a few days ago [defeated Sheffield United 5-0] is in the bin and in the past.
"We didn't threaten enough. I wanted to see much more from my team. There is a lot to improve.
"The thing we have to take from the game today is how are we going to use this to beat Newcastle on Saturday. Feeling the pain. That's what we have to do now."
On Aaron Ramsdale's performance: "Like every player, every players wants to do their best. We haven't done it and we're out [of the cup]."
'A big win against a good side'
FT: West Ham 3-1 Arsenal
West Ham United
West Ham boss David Moyes, speaking to Sky Sports: "We've done a lot of good things. We've got the goals which we maybe haven't done for the last one or two games. It was a big win against a really good side. I thought the players did a good job defensively. In the main we kept a really good team down to not too many chances.
"Okay, we got a bit fortunate with the first goal but they [Arsenal] are a big threat from set-pieces. We can be that as well.
"We are top of the group in Europe and in the top half of the Premier League table so we're not doing too bad. We are happy."
'Lacklustre' Man Utd
FT: Man Utd 0-3 Newcastle
Clinton Morrison
Former Republic of Ireland striker on BBC Radio 5 Sports Extra
I am so frustrated watching it here, I want Manchester United to give the fans something to shout about - it was so lacklustre.
When crosses are coming into the box there is no Manchester United players in the box. Some players do not know what it is all about to play for Manchester United.
He is under pressure Erik Ten Hag, there is a lot of question marks over him at the minute. Even when they played Brentford they were lacking something and Scott McTominay saved them.
Some of the players are not at the level at the moment.
Post update
FT: Man Utd 0-3 Newcastle
Some stat from Opta....
Manchester United have lost 8+ of their first 15 games in a season for the first time since 1962-63 (9), while they've lost five of their first 10 at home for the first time since 1930-31.
'Tactically Howe got it spot on'
FT: Man Utd 0-3 Newcastle
Clinton Morrison
Former Republic of Ireland striker on BBC Radio 5 Sports Extra
Fully deserved for Newcastle, after the first 10 minutes they were the better team.
Lewis Hall and Tino Livramento was outstanding, credit to Joe Willock too who has been out for a while.
Everyone was all talking about Man United being poor, but tactically Eddie Howe got it spot on.
Anthony Gordon led the line very well and caused problems. Man United are nowhere near it.
Post update
That concludes the ties for tonight. Don't go anywhere, though. We'll have reaction and the quarter-final draw for you ASAP.
FULL-TIME
Man Utd 0-3 Newcastle
Newcastle = sensational.
Manchester United = shocking.
Post update
Man Utd 0-3 Newcastle
We've had two of the added four minutes. There are more empty than full seats now.
'Newcastle have put a shift in'
Man Utd 0-3 Newcastle
Clinton Morrison
Former Republic of Ireland striker on BBC Radio 5 Sports Extra
Newcastle have made changes and have put a shift in.
It is brilliant from Eddie Howe. He has motivated his players unlike Erik Ten Hag who cannot get a tune out of his.
INJURY TIME
Man Utd 0-3 Newcastle
We move into four added minutes.
Aaron Wan-Bissaka marks that by sending a pass straight out of play. Shambolic.
Post update
Man Utd 0-3 Newcastle
How do Manchester United expect to score with nobody in the box?
Antony sends a ball into the area, but despite Marcus Rashford and Rasmus Hojlund being on the pitch they're nowhere.
Post update
Man Utd 0-3 Newcastle
Like Hannibal Mejbri earlier in the game, Bruno Guimaraes throws up his arms to whip up the Newcastle fans. Not sure they need the encouragement to be honest, Bruno.
Get Involved
#bbcfootball, WhatsApp on 03301231826 or text 81111 (UK only, standard message rates apply)
Post update
Man Utd 0-3 Newcastle
Into the last five minutes. Newcastle are heading for the last eight courtesy of a bit of revenge on the side that denied them the Carabao Cup last season.
Get Involved
#bbcfootball, WhatsApp on 03301231826 or text 81111 (UK only, standard message rates apply)
Post update
Man Utd 0-3 Newcastle
Not a good few minutes for Bruno Fernandes. He fails to beat the first man with a free-kick into the box and then, from a subsequent attack, he sees a shot from miles out blocked.
YELLOW CARD
Man Utd 0-3 Newcastle
Sofyan Amrabat is booked for fouling Joe Willock. Soon after, he commits another foul right under the ref's nose. Another home player dicing with a red.
Post update
Man Utd 0-3 Newcastle
Clinton Morrison
Former Republic of Ireland striker on BBC Radio 5 Sports Extra
If I wasn't working I would also be leaving the stadium like the Manchester United fans to miss the traffic.
Post update
Man Utd 0-3 Newcastle
The home fans are heading for the exits now.
They left early on Sunday and they're doing so again tonight.
These are pretty grim times for the Red Devils.
YELLOW CARD
Man Utd 0-3 Newcastle
The home side are losing their heads.
Sergio Reguilon kicks the ball away in frustration and gets booked. He doesn't learn, though, and keeps throwing his arm up and chuntering at the ref.