An arrest has been made and a knife seized after a person ran onto train tracks in East London.
The British Transport Police (BTP) and Metropolitan Police were called at 4pm on Thursday following a report of a fight near to Bow Church DLR station.
BTP said, following the fight, someone had run onto the train tracks and a weapon had been witnessed.
Imagery shared to social media shows officers and police dogs searching the rail lines and a police helicopter aiding the search.
The force said a knife was seized and the Metropolitan Police made one arrest.
Helicopters and massive police presence at Bow Church DLR station, which is cordoned off. pic.twitter.com/eCnD3ycEk4— Rory Campbell (@rufeus) July 23, 2020
Inquiries are ongoing into the fight and how it started.