A man started a fire at a Kyoto animation studio after spraying a flammable liquid Thursday morning, leaving at least 13 dead and nearly 40 injured, several of them unconscious, local police and rescuers said, according to Kyodo News.

Many bodies were found on the second floor of the three-story studio of Kyoto Animation Co., where about 70 people were believed to have been working when the fire started around 10:35 a.m.

The police said some people witnessed the man screaming “Die” as he set fire. They also found knives at the scene.

The 41-year-old man, who was among the injured and has been taken to hospital, has admitted to starting the fire, according to the police.