CNN reported Wednesday that an AMBER Alert has been issued in Oregon for 16-year-old Hannah Anderson and eight-year-old Ethan Anderson. The two are suspected to have been kidnapped by James DiMaggio after their mother’s body was found among the ashes of his burned down home in San Diego, California.

The blue, four-door Nissan Versa with California license plate 6WCU986 that DiMaggio is believed to have been driving was sighted in Oregon Wednesday. Hannah and Ethan were reported missing Sunday by their grandparents.

A law enforcement source with knowledge close to the investigation said there were charred human remains that are similar to that of an eight-year-old boy. Police say that they are waiting on DNA tests to determine whether the remains are Ethan’s.  

DiMaggio is said by relatives to have been a close friend to the Andersons. An arrest warrant has been issued for murder for DiMaggio.

Anyone with information on the investigation should call the San Diego County Sheriff’s Department Homicide Detail at 858-974-2321 or submit an anonymous tip to Crime Stoppers at 888-580-8477.