Rail lines remain blocked between Ely and Peterborough following a freight train derailment earlier this week.
Greater Anglia advises passengers that services between Bury St Edmunds and Peterborough are suspended until further notice.
A replacement bus service is in operation.
Network rail engineers are on site, working to recover the derailed wagons.
Disruption is expected to continue over the weekend and until the end of the day on Monday.