The father of two missing San Diego children issued a desperate plea to their suspected kidnapper on Wednesday, asking for their release and also urging his teenage daughter to run if she gets the chance. 

Police are searching for 8-year-old Ethan and 16-year-old Hannah Anderson, both of whom went missing after suspect James Lee Dimaggio, 40, killed their mother, Christina Anderson and burned down her house with her and an unidentified child inside. It's believed Dimaggio then took off with one or both of Anderson's children. 

Authorities say it's possible that young Ethan's body is in fact the one whose remains were found, but they're awaiting DNA results to make a positive identification.

"There was a child's body recovered in the rubble of the house that was burned down ... literally that's all the information we have," said Lt. Glenn Giannantonio of the San Diego Sheriff's Department. "We don't know if that's Ethan's body that was discovered, and we're just keeping our hopes up that he's still out there and alive."

In the children's father's statement, he turned his attention to Hannah, saying in part, "Hannah, we all love you very much. If you have a chance, you take it. You run, and you'll be found."

Last night a vigil was held in San Diego to remember Anderson and offer support to the family as the search continues. A motive is still unclear.