BOISE, Idaho -

A report of a 9-year-old boy jumping out of a tree and threatening two other boys with a pocket knife is being investigated by a school resource officer.

Boise Police Department spokeswoman Lynn Hightower tells the Idaho Statesman that the reported incident occurred before 5:30 p.m. Tuesday at the Elm Grove Park.

Hightower says the school resource officer will determine if the boy's threat was a prank or malicious.