UPDATE: Richard Allen Longstreet has been found safe.

Have you seen Richard Allen Longstreet? Michigan State Police need your help in finding this missing 14-year-old boy.

According to WOOD TV and the Kalamazoo County Sheriff's Office, Rich Allen Longstreet is 120 pounds, stands 5'10", wears glasses and has brown hair. He was last seen wearing and orange and white striped shirt with gray sweatpants.

Longstreet is diagnosed with pervasive developmental disorder which is a form of autism.

Longstreet was looking for his dog that had been missing in some nearby woods in the 6900 block of Owen Drive in Alamo Township just north of Kalamazoo. The last time he was seen was between 4 and 5 p.m. Monday.

The Michigan State Police were notified around 10 p.m. that Longstreet was missing. Police immediately began searching the woods that were nearby his house. Authorities even used thermal imaging cameras to locate the boy but he was no where to be found.

If you and anyone you know has any information please contact the Kalamazoo County Sheriff's Office at 269-383-8748.