NEW : DiMaggio could be in rural area after possibly abandoning car rigged with explosives . Comment: Their mother 's body was found in DiMaggio 's burned-down house in San Diego . There is a nationwide manhunt for the suspect ; police say he was the mother 's friend .
NEW : DiMaggio could be in rural area after possibly abandoning car rigged with explosives . James DiMaggio is believed to have kidnapped a 16-year-old girl , possibly an 8-year-old boy . Their mother 's body was found in DiMaggio 's burned-down house in San Diego . There is a nationwide manhunt for the suspect ; police say he was the mother 's friend .