The names of the 32 people who were killed on campus Monday will not be released until every victim is identified, police said.

Police revealed that the same weapon was used in both shootings, but they have not yet concluded that there was only one gunman reports PEOPLE

A Virginia State Police officer said Cho apparently did not leave a suicide note.

But ABC News reported that law enforcement sources said Cho did leave some kind of note in his dorm room. It states, "You caused me to do this," ABC News reported.

According to a timeline published on the college Web site, police officers first responded to a 911 call at 7.15 a.m. and found two gunshot victims in what was believed to have been a domestic dispute in a dormitory in West Ambler Johnston Residence Hall. Authorities believed the incident was contained.

But then two and a half hours later police received another 911 call, this time to Norris Hall, a building containing faculty offices, labs and classrooms.

Palestinian student Jamal Abhouguiti captured the sounds of successive gunshots on his cellphone camera as police approached Norris Hall. His footage has since been shown around the world. "I just took my cellphone and started recording that," Abhouguiti told Larry King Live.

"At first I thought there was another bomb threat, in past week [we have had] two of these," he said "I saw cops struggling to get in, if it was chained."

Now the man who sold Cho Seung-Hui one of those weapons, which the young student would use to execute 32 students and staff here on Monday, yesterday recalled the $571 sale of a Glock handgun as rather "unremarkable."

A nice, clean college kid, is how Roanoke Firearms owner John Markell recalled Cho, who came in 37 days ago to make his buy.

Virginia Governor Tim Kaine reacted harshly last night to gun lobbyists who have suggested if the students were all armed they may have had a fighting chance. He said at a time when bodies are still being identified, no one should be making the killings their own political "hobby horse."

He once referred to himself as "anonymous." Now his world -- every detail and scrap of paper collected in his dorm by police yesterday-- are the focus of the most intense mass shooting investigation in American history.