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TRACY-

A 13-year-old boy is recovering a week after he was bitten by a Tracy Police K9.

“He’s a lineman. He’s a inside linebacker, so it’s not like he cries for anything like that and the way his scream… I knew something was really wrong,” John Jacobo, the boy’s father, told FOX40. “I knew it was a vicious attack.”

According to Tracy Police, the K9 unit was on duty in the area on Jan. 22. The dog’s handler secured the K9 inside his vehicle but, somehow, the back door popped opened,  and the dog got out.

John Jacobo Jr. was attacked down the block from his house while he was walking home from doing homework at a friend’s house.

The officer didn’t noticed his K9 was missing until responding to a 911 call about this very incident.

The Tracy Police Department is launching an internal investigation to figure out exactly how the dog was able to get out.

Jacobo says his son was treated and released from the hospital, but is bed-ridden for the next two month as his wounds heal before he can begin physical therapy.