 Sources claimed to be close to the case said hunting knives were used to commit the crime.Prosecutor Colleen Curtin Gable said Hassan, who is stocky and over 6 feet tall, bought two hunting knives less than an hour before the attack, then parked his SUV out of view at the station, and hid in wait inside the station to await his wife.When Hassan's wife walked through the door, he stabbed her more than 40 times in the face, back and chest and decapitated her, some of which was caught on surveillance video.