TOKYO - A fire broke out at an orthopedic hospital in Japan's Fukuoka City early Friday morning, leaving 10 people dead and five others injured, local media reported.

There are about 17 people including patients and working staff in the four-story building when the fire started at around 2:20 am, Kyodo News reported, citing local fire department officials.

The victims included eight patients.

Investigation into the cause of the fire is underway.