The Virginia State Police issued an Amber Alert for three missing children believed to be “in extreme danger” with their non-custodial parents. The children were last seen in Roanoke County, Virginia.

Cameron Allison is 6 years old with brown hair and brown eyes.

Emma Allison is 6 years old with brown hair and brown eyes.

Colin Allison is 21 months old with blonde hair and brown eyes.

The children are believed to have been abducted by John Varion Allison.

John Varion Allison stands 5 foot 9 inches and has blonde hair and brown eyes. He weighs about 185 pounds. He is driving a 1999 Maroon Chevrolet Suburban SUV with a Virginia tag of VVU-3796, or a 2006 Maroon Cadillac 4 door car with a Virginia tag of VMV-8238.

John Allison may be in the company with his wife Ruby Marie Allison. She stands 5 foot 3 inches with brown hair, brown eyes and weighs about 160 pounds.

If you see them call 911 and report where they are to law enforcement.