Postpublished at 21:11 Greenwich Mean Time 19 February 2015
Inter striker Rodrigo Palacio doesn't have the pace to run away from the Celtic defence and instead fires in a shot that is easy for Craig Gordon.
FT: Celtic 3-3 Inter Milan
Armstrong, own goal and Guidetti for Celtic
Shaqiri and Palacio (2) for Inter
Roddie McVake
Inter striker Rodrigo Palacio doesn't have the pace to run away from the Celtic defence and instead fires in a shot that is easy for Craig Gordon.
Matt Davis: "Inter have been gifted a few goals, if Celtic stay focused they can turn this around."
Gary from Colburn: "Come on Celtic, three goal, please play you hearts out."
The hosts try to launch a quick attack at the start of the second half but the ball drifts through into the grateful gloves of Inter keeper Juan Pablo Carrizo.
We're underway again...
The teams are back on the pitch, ready for another 45 minutes of Europa League last 32 action.
Chickey: "l'm a big fan of Craig Gordon but that's 2 goals gifted. Got to get his head this game."
Freddiemac: "If Henrik was in goals, Celtic would be ahead at half-time."
Tom English at Celtic Park
BBC Scotland
"It's just a frenetic mistake-fest. Mistakes all over the place, goals all over the place. There could be more goals in this one. The atmosphere has been brilliant, when Celtic came back this place was electrified."
Janet on Facebook: "Total disaster for Craig Gordon, cost Celtic 2 goals tonight... he's been so good for them as well, I feel for him."
Martin McMahon on Facebook: "Poor Craig Gordon - Culpable for goals 1 and 3, Partly guilty for #2. Having a 'mare tonight!"
BBC Scotland's Chick Young described that first half as "astonishing". He's spot on...
Liam Walsh: "Following the @celticfcgame on #bbcscotfootball, I've got a best man speech this weekend...I don't need any more anxiety!"
David Norwich: "I want some of whatever ronny has got @celticfc on. Absolutely tireless, completely different team from start of the season."
The referee's whistle draws what has been a breathtaking first half of football to a close.
More of the same in the second half please lads...
Gary Medel's long diagonal should be gathered straightforwardly by Craig Gordon, but the diving Celtic goalkeeper lets it drop from his grasp and Inter's Rodrigo Palacio is there to tuck it in to an empty net from an angle.
There's only two minutes left in what has been a sensational first half. Xherdan Shaqiri curls a free kick into the Celtic box but it drifts harmlessly wide.
A tidy bit of foot-work in the box by Scott Brown almost tees up Stefan Johansen but the Inter defence are quick to close him down. The ball breaks to Gary Mackay-Steven but his shot is deflected away from danger.
Billy Turnbull: "Inter will actually have to move in to second gear now..."
Celtic have a chance to take the lead after Stuart Armstrong is downed on the edge of the area, but Leigh Griffiths' effort is well off target.
Alasdair Lamont at Celtic Park
BBC Scotland
Wow. 60 seconds is a long time in football! Inter were absolutely cruising and all of a sudden they're punch-drunk. This game is back on and how!
David on Facebook: "Wow what a difference 2 minutes make, come on Celtic!!!"
Tim Oliver: "Stuart Armstrong showing he's a brilliant buy for Celtic. Rescued them in this tie in seconds."
There were a fair few messages sent in from people telling us that the tie was already over at 2-0 to Inter. I'll spare those folk embarrassment though.
Another chance for Celtic as Stefan Johansen knocks a free-kick into the area but Nir Bitton can only nod wide.
What a night for Stuart Armstrong on his European debut for Celtic, a goal and a huge hand in the second.