Train services between Ipswich and Cambridge are being disrupted this morning because of a fault with the signalling system between Newmarket and Cambridge.
Greater Anglia has advised customers that services running through the stations are being diverted, and to expect delays until 10am.
The fault is at a signal in the Dullingham area, which has left the line from Newmarket to Cambridge blocked.
A spokesman from Greater Anglia said that trains from Ipswich to Cambridge are being diverted after leaving Kennett to terminate at Ely, until Network Rail is able to resolve the issue.
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