A Philippine rowing team discovered the body of a Japanese man floating in Manila Bay early Friday, police said.

The man, Keiichi Wada, 40, had four stab wounds, in the neck, chest and stomach.

Officials at the Japanese Embassy in Manila identified Wada but gave no further details and were unable to say if he was a tourist.

Police said the man was wearing shorts and a T-shirt. They found the man's wallet, which contained business cards, phone cards and a small amount of Philippine money but no official identification such as a driver's license or passport.

A staff member at an apartment complex in the suburb of Malate in Manila said Wada checked into the inn Wednesday after arriving from Japan. He apparently checked out around 11 a.m. the next day.

Wada was reportedly by himself and carrying a small bag when he checked into the apartment.

Unconfirmed reports suggest Wada worked as a postman in Tochigi Prefecture until his resignation in March.