TOKYO (AP): Japanese police searched Monday for a woman who stabbed three people in the arm at a crowded train station in the western city of Osaka.

Local police issued a public plea for information and released pictures of the suspect taken by security cameras when the attacks occurred Sunday afternoon.

The images show a middle-aged woman in a black dress and with shoulder-length hair, her face obscured by a large sun hat.

The woman is suspected of stabbing three women from behind on a crowded platform in Osaka Station, about 250 miles (400 kilometers) southwest of Tokyo.

The victims included two university students and a company executive, local media reported.

All three had only light injuries, according to a police spokesman.

The search comes just two weeks after a bloody rampage in Tokyo by a factory worker who rammed a truck into a crowd of pedestrians and then jumped out and stabbed people at random. He killed seven and injured 10 before being subdued by police at the scene.