At least four people were injured in a stabbing incident on a train in the Japanese capital city late Wednesday, according to local media.
Public broadcaster NHK reported that a woman was wielding a knife on a train that had stopped at JR Akihabara Station in Tokyo.
"So far, four people have been injured and taken to the hospital," the broadcaster said.
Metropolitan Police arrested a suspect in possession of a knife at the station, and police have launched an investigation into the incident.
