A man armed with a knife has rampaged through a Paris park attacking passers-by seemingly at random. Officials say the man killed one person and injured two others in the attack Friday afternoon. A witness says police killed the assailant. The man’s motives weren’t immediately clear. The witness who spoke to The Associated Press says he saw the attacker stab one man and that he appeared to select victims at random. He says police fired a first shot and shouted a warning before firing again. A police union official says officers shot repeatedly because they feared the man was wearing an explosive belt and might blow himself up.