10 people injured

It has prompted fresh vows by officials for measures to reverse a surge in violence in the city's transit system.

Five of those shot were in critical but stable condition, and six others were injured by shrapnel from bullets and other sources, as well as a panicked crush of people fleeing the carriage as it quickly filled up with smoke, officials said. Some riders collapsed to the ground as they poured on to the platform in Brooklyn's Sunset Park neighbourhood.

The suspect, 36, allegedly told police he became angry when he saw women who "looked happy" and wanted to kill them, according to local media reports.

One victim, a female student, is said to be seriously injured, while the others suffered less severe injuries.

Violent crime is rare in Japan and tight security measures are in place in Tokyo, which is hosting the Olympics.

The man attacked passengers on a train near Seijogakuen station at about 20:40 (11:40 BST) on Friday.