According to several students, Cho looked into several classrooms before the shooting began. Erin Sheehan, an eyewitness and survivor who had been in room 207, told reporters that the shooter "peeked in twice" earlier in the lesson and that "it was strange that someone at this point in the semester would be lost, looking for a class". At about 9:40 a.m., Cho began shooting. His first attack after entering Norris occurred in an advanced hydrology engineering class taught by Professor G. V. Loganathan (from India) in room 206. Thirteen registered students were inside. Cho first shot and killed the professor, then continued firing, killing nine of the thirteen students in the room and injuring two others in the classroom. He also shot at one male student but missed him.