Ayden Almanza, 8, left, and his brother Austin Almanza, 10. Austin was killed Oct. 21 by a crossbow bolt in Lincoln County. [Photo provided]

CHANDLER — A 13-year-old boy charged with first-degree murder in a deadly crossbow shooting told authorities “he was hunting and accidentally shot his friends.”

The surviving victim, though, said the shooter "was mad at them," according to investigators.

Shane Edward Brooks, of Wellston, is accused of shooting his friends — brothers Austin Almanza, 10, and Ayden Almanza, 8 — with the crossbow on Oct. 21. Brooks is one of the youngest ever to be charged in Oklahoma as an adult with first-degree murder.

Brooks was arrested the day of the shooting but his name wasn't initially released. Lincoln County prosecutors charged him late last year.