OSAKA — Police served a fresh arrest warrant on Mamoru Takuma on Friday on charges of stabbing seven schoolgirls to death and injuring 12 others in an attack June 8 at an Osaka elementary school.

In the new charges, Takuma, 37, is accused of fatally stabbing the seven second-graders with a kitchen knife and injuring 10 other students and two teachers at the state-run Osaka Kyoiku University Ikeda Elementary School in Ikeda, Osaka Prefecture, during a 10-minute rampage, police said.

The seven victims and 12 injured were not included in his initial arrest warrant, they said. In all, Takuma allegedly killed 8 pupils and injured another 13 pupils and two teachers at the school.