The New York Times is reporting that according to Oakland's police chief, the former nursing student accused of killing 7 people and wounding 3 others at Oikos University in Oakland, California lined up his victims before shooting them.
Oakland police chief Howard Jordan told CNN that this was a "calculated, cold-blooded execution in the classroom."
In an interview with ABC's Good Morning America, Chief Jordan also said the suspect, former student, One Goh, 43, was upset about being expelled last year.
Jordan also revealed that Goh felt "mistreated and disrespected" in the past by his fellow students. "He was having, we believe, some behavioral problems at the school and was asked to leave several months ago."
Jordan told CNN that investigators believe Goh walked into the university Monday morning, and took a receptionist hostage. He then proceeded to look for a specific female administrator, but was told she was not there.
Upon realizing the woman he was looking for was not there, Goh became even more angry, and shot the secretary, police say. He then ordered students to line up against the wall, but not all of them cooperated, so Goh began shooting, CNN reports.
"I'm going to kill you all," Goh said.
Paul Singh, the brother of shooting victim, Devinder Kaur, told Reuters that his sister told him she and the other students believed Goh was joking at first.
Tashi Wangchuk told Reuters his wife, Dechen Yangzom, 28, heard the gunfire while teaching in another classroom.
According to her husband, Yangzom locked the door and turned out the lights and sat silently with her students. Goh banged on the door and shot at the door, but finally surrendered and left. Wangchuk said the police said what his wife did was "heroic."
In the end, 7 people were killed, and 3 were wounded. Chief Jordan told CNN that after Goh's rampage, he drove off in of the victim's cars.
Goh was arrested shortly after at a grocery store in Alameda, an Oakland suburb. Jordan said he was very "calm" and cooperative."
California governor, Jerry Brown, who was the mayor of Oakland from the 1999 to 2007, called the killings "shocking and sad," CNN reports.
According to CNN, a memorial service is scheduled to be held Tuesday at Korean Methodist Church, but the location may be changed if the church can't hold all the people who want to attend.