The RCMP have issued an Amber Alert for a 3-year-old boy who disappeared from his Sparwood, British Columbia home overnight.

Kienan Hebert was last seen when his family put him to bed on Tuesday evening. The toddler was reported missing at 8:30 a.m. Wednesday morning, prompting police to begin searching the community, about 600 kilometres east of Vancouver, with the aid of helicopters and sniffer dogs.

The Mounties say they're looking for 46-year-old Randall Hopley and a 1987 brown Toyota Camry with B.C. licence plate 098RAL.

Kienan is described as Caucasian with red hair. RCMP said he had been wearing "Scooby Doo" boxer shorts and may have been carrying up to three blankets.

Police say that  Kienan and Hopley are of no relation.

In an interview, B.C. RCMP spokesperson Cpl. Dan Moskaluk said Kienan has a history of sleepwalking, "but in past incidents, he's never exited the house."

Investigators have been speaking to the boy's family and making inquiries in the local community, Moskaluk said.

Anyone with information on Hebert's whereabouts is asked to call the Elk Valley RCMP at 250-425-6233.

With files from The Canadian Press and CTV British Columbia