Police did not provide details about the nature of the killing in their statement Monday, but authorities have told al-Mabhouh's family that there were signs of five or six electric shocks on his legs, behind his ears, on his genitals and over his heart. Blood on a pillow led police to believe he was suffocated.Dubai authorities started investigating immediately, Homeidan said in the statement Tuesday, and ordered an autopsy be conducted on al-Mabhouh A number of witnesses have been interviewed The investigation was ongoing, he said, and more details will be forthcoming.