There have been long delays on the rail service between Royston and Cambridge today after a man collapsed on a train.
Emergency services were called to Ashwell and Morden railway station where the man, who is in his 60s, had been taken off the train.
The man had suffered a suspected heart attack while travelling from Cambridge and was taken to Lister Hospital in Stevenage, where he remains in a critical condition
An East Anglian Air Ambulance was also called to attend the scene.
Delays on the line between Royston and Cambridge are expected to continue until about 1pm.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here