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.

Inquiries are ongoing into the fight and how it started.