Kate Williams
BBC Local Live

Essex Police, external are warning anyone who's bought illegal drugs in Chelmsford over the last twenty-four hours not to take them.

Officers are worried about a potentially dangerous batch of herion or cocaine that appears to be available in the city. 

Several people became unwell in drug-related incidents yesterday. 

Det Insp Matt Cornish said: "If you have bought heroin or cocaine in Chelmsford in the last 24 hours or so, please do not take them. 

"Throw them away, or better still, tell us where you bought them so we can find those responsible and remove these drugs from circulation."

Having said earlier the disruption on train services on the Norwich-London Liverpool Street line is likely to continue until about 14:00, Greater Anglia have just tweeted that the finish time has been put back by an hour.

The line was closed between Witham and Shenfield earlier, but it reopened and we're waiting for services to catch up with the timetable:

Commuters across East Anglia are left unable to travel after overhead cable damage closes the line.

The 15-year-old pleaded not guilty to manslaughter and will go on trial in July.

Ben Fryer
BBC Essex

A 15-year-old charged with manslaughter of Arek Jozwik has pleaded not guilty during a hearing at Chelmsford Crown Court.

Mr Jozwik, 39, was assaulted on 27 August in The Stow, Harlow, and later died in hospital.  

A trial date set for July. The teenager, who can't be named because he's under 18, has been released on conditional bail.

It's estimated disruption on the trains will last until between 12:00 and 14:00 today, so here's where you can find updates:

BBC Travel website keeps a regular check or you can log on to the Greater Anglia webpage, external, or stay across their Twitterfeed, external.

All lines are open now, but it will take some time for the Norwich-London Liverpool Street main line to return to normal again, says train operator Greater Anglia.

As we look forward to a weekend of FA Cup action, watch some of the best goals from the FA People's Cup - the UK's biggest free five-a-side tournament - and what it means to those who lifted the trophy.

You can get involved in the 2017 FA People's Cup, in one of 16 categories, now! Find out how to sign up here.

This morning's problems on the Norwich-London mainline could have been caused by a number of factors, a spokeswoman for Network Rail has explained.

The cause is still being investigated, but she said: "In the past we've had trees and the like fall on the line, so we had to close it and turn all the power off, and then put the line back up again. 

"Once the work is carried out on the line we have to make sure it's all working and then send a test train down at a low speed. 

"The first few trains after that go down at the low speed, just to make sure that everything is OK and then things will start to get back to normal again."

This morning, she said, the test train was sent down the track at 08:00 and once it was declared safe Greater Anglia would need to work from there to get the service running again.

The line may be up and running again, but Essex has been beset by train problems this morning as services between Witham and Shenfield were completely closed.

Many commuters have taken to Twitter to ask why no buses or other rail replacement alternatives are being provided, including Jordan Newell who remarked, external: "No word on buses or when services will be back running."  

Gavin Searley tweeted, external: "Recommend people not to travel when paying £5k for the service? #Shenfield, external No business continuity plan? #disgrace, external"

Train company Greater Anglia says all lines are open but spokesman Jonathan Denby has told us that "disruption is expected until midday":

There's been anger from commuters this morning over a lack of replacement rail buses - the line is completely closed between Witham and Shenfield due to overhead cabling problems.

The only buses which might be laid on would run between Witham and Stansted so people "could try to use the West Anglia line instead", said Jonathan Denby from Greater Anglia.

"But for this morning we would encourage people not to travel unless their journey is absolutely essential."

Greater Anglia say the damage to the track between Witham and Shenfield is "unusual".

Spokesman Jonathan Denby said: "We know that a train that was going through that section late last night suddenly suffered a complete loss of power which suggested it was an overhead line problem.

"They went to investigate and found a problem with the train itself.

"They then went and inspected a much longer section of track and found damage in a number of places.

"It is unusual, but at this stage we don't know what the underlying cause is."

The Conservative MP for Colchester, Will Quince, has spoken of his anger after all trains between Witham and Shenfield have been cancelled because of overhead line damage.

Passengers are stranded along the line north of Colchester up to Norwich.

"We've got thousands of commuters standing at stations not knowing what's going on, and it's not acceptable," Mr Quince said.

Patrick Byrne
BBC News

Damage to overhead cables in Essex mean there are no through trains between Norwich and London this morning bringing travel problems for people in Norfolk, Suffolk and Essex.

Image source, Network Rail

The problems with the overhead wires is between Witham and Shenfield.

Cancellations and delays are expected to last until 14:00. 

Trains on the Southend line are running as normal.

The company is advising passengers for London from Norfolk and Suffolk to travel via Cambridge. 

Its tickets are being accepted between Cambridge and London and on the Underground.  

Elizabeth Rizzini
BBC Look East weather

We are starting off this morning with another widespread frost and we've got a few early outbreaks of rain too so some of this rain will refreeze onto the roads and pavements - there's a Met Office warning of ice for the rest of the morning.

Through the afternoon it's going to stay rather grey and cloudy, and with a slight shift of wind direction, temperatures will get up to between 3C and 5C (37F to 41F).

Watch my full regional forecast here:

Jodie Halford
BBC News

Good morning - we're back with live updates for Essex right through the day.

The big news this morning is about the trains. Overhead cable damage, external means there are no Greater Anglia services running between Witham and Shenfield.

Disruption is expected until 14:00, we've been told. We'll bring you more on this shortly.

A 24-hour strike on two London Underground lines came has come to an end, but commuters are warned of continued disruption into the night.

A cat is rescued and survives after it got trapped under the engine of a van.

The team here is heading home, but before we go, we'll leave you with a look at some of the stories making the news across the county during the day:

• The father of Dean Saunders, who committed suicide while in Chelmsford Prison, says they will carry on campaigning over the state of the country's prisons
• Tributes have been paid to Professor Sir Nigel Rodley, who helped found the University of Essex Human Rights Centre, who has died at the age of 75
• A cat is back with its owner after surviving a journey inside the engine of a van in Grays

Have a good evening, and here's hoping the temperatures will pick up a bit tomorrow, it's been a very chilly day today.