As documented in his manifesto, he assessed the Glock 34 as "an efficient and highly accurate weapon." According to his manifesto, Rodger had saved ,000 of pocket money, which was given to him by his parents and grandmothers, in order to purchase the weapons and supplies that he needed for the attacks.
Their bodies were found the day following the shootings.
They were identified as Rodger's roommates, Weihan Wang and Cheng Hong, and a friend named George Chen.
The bodies of Wang and Hong were found in their shared bedroom, whereas Chen's body was found in the bathroom.
The positioning of the bodies suggested each victim had entered the apartment separately before being murdered, and that Rodger had made efforts to conceal the bodies of the first two victims by covering them with blankets, towels, and clothing.
During the drive, they called police in Isla Vista and they arranged to meet them upon arrival.
Hearing a radio news report of a shooting in Isla Vista, his mother called the therapist, who told her it was unrelated, saying that Rodger promised to act the following day and it would be unlike him to deviate from such details.
Faint bloodstains in the main hallway of the apartment indicate at least one of the victims had been attacked as he entered the apartment.
Authorities later said that the presence of a blood-soaked bath towel and paper towels in the bathroom suggest Rodger had attempted to clean the hallway after each murder.
After returning to his car, Rodger drove two blocks onto Pardall Road and fired once at a coffee shop as he went eastbound.
The shop was closed and unoccupied at the time, and no one was injured by the gunshot.
After uploading the video, Rodger e-mailed a lengthy autobiographical manuscript to some of his acquaintances, his therapist and several family members.