KENTWOOD, Mich. (AP) — A 9-year-old boy died after being repeatedly stabbed by a 12-year-old boy at a playground in western Michigan, police said Tuesday.

Michael Conner Verkerke ran home and collapsed on the porch around 6 p.m. Monday after he was stabbed at a mobile home park in Kentwood, near Grand Rapids, according to police. Investigators said the older boy then left the playground and called police from a nearby home to turn himself in.

The 9-year-old died after being rushed to a hospital, Kentwood police said.

Witnesses told investigators that four children were playing when one of them, for unknown reasons, pulled a knife and stabbed the boy.

Glen Stacey, who lives nearby, told The Grand Rapids Press that the older boy approached him after the attack and asked to use his phone. He said the boy called 911 to report the attack.

Stacey said he also called police and described the boy as “very calm.”

“The only time he raised his voice was when the police came,” Stacy said.

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