Reports from London say British armed forces have evacuated Tooting Broadway London underground station following a security alert.

 Twitter users say the station is closed reporting a “massive police presence.”

 The Metropolitan Police said the police presence around Tooting Broadway station is due to reports of a man threatening people on a train.

Having searched the station, police said they couldn't find anyone matching the alleged perpetrators description and the incident was “stood down.”

Police have tweeted a statement saying officers would remain in the area.