ATHENS -- A gunman hijacked a bus carrying more than 30 Japanese tourists, after killing his mother-in-law and a friend in southern Greece on Saturday. There were no immediate reports of injuries to the bus passengers.

But the gunman threatened to kill each of them one by one if police did not back away from the bus he had seized.

"Tell the police chief to stop all these cars following me because I will raise them (the hostages) from their seats one after another and execute them," he told Antenna Television by mobile phone.