A "train crew member" was assaulted at Cheam station last night.
The attack happened at about 8pm with some reports saying a driver was headbutted.
Officers from Sutton police, together with British Transport officers were called.
Train services were disrupted for several hours as a result.
More to follow.
Did you witness the attack? Call the newsroom on 0208 722 6359.
Assisting colleagues from @BTP with assault at Cheam BR station now #workingtogether #TeamD
— Sutton MPS (@MPSSutton) March 24, 2015
CANCELLED Due to emergency services dealing with an incident (driver assaulted) the 19:04 Horsham to London Victoria will terminate at Cheam
— SouthernMalachi (@SouthernMalachi) March 24, 2015
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