Fans clash in West Ham's EFL Cup clash against Chelsea
Clashes between rival supporters marred West Ham's EFL Cup fourth round win over Chelsea at the former Olympic Stadium on Wednesday night.
Skirmishes broke out towards the end of the Hammers' impressive 2-1 fourth-round win as police and stewards battled to maintain segregation behind the goal being defended by West Ham.
This derby was billed as the biggest footballing test for the London Stadium so far, on a night when basketball and track cycling competitions were also taking place on the former Olympic Park.
The capacity is capped at 57,000 and 45,957 were in attendance, along with a heavy police presence.
Chelsea sold out their allocation of 5,182 tickets and, with the Hammers 2-0 up, trouble broke out.