East Street in Sudbury has been closed due to a two vehicle crash (Image: Archant)
An accident has blocked part of the A12, causing severe congestion.
Two cars were involved in the crash on the northbound carriageways just after junction 19, the Boreham interchange.
Police said one lane was closed and traffic was queuing back as far as the A414 junction for Danbury.
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 The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.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