At 9:52 am, approximately nine and a half minutes after the second shooting began, police started to enter the building. They couldn’t shoot their way through the chain locked entrances, but managed entry via a separate entrance. They went up to the third floor, but heard from student Emily Haas, who was wounded and survived in room 211 (Professor Nowak's French class), saying that the gunman was in her classroom as she stayed on the line. As police started to descend the stairwell, Cho had already begun to hear the footsteps. He looked out into the hallway briefly, before walking back into the centre of room 211 towards the front and, just as police reached the second floor, shot himself in the temple with the Glock 19 and died instantly. When police arrived at room 211, they saw Cho lying on the ground with his guns beside him, and some students, who were either injured or playing dead, heard the officer's first words: "Gunman down!" During the investigation, State Police Superintendent William Flaherty told a state panel that police found 203 remaining rounds of ammunition in Norris and later testified that the armed aggressor was well prepared to continue on.