It's unclear how Goh earned a living before he became a nursing student at the tiny private school of about 100 students. But in January, Goh found himself expelled. Oikos officials have not said publicly what led to his expulsion.
According to the school's disciplinary policy, dismissal can come if a student threatens or harms someone or school property. "Because Oikos functions as a community of believers, students are to demonstrate a respectful attitude in all encounters," it states.
The school kicked Goh out for unspecified behavioral problems and because he had "anger management" issues, according to Oakland Police Chief Howard Jordan.
People at the school "disrespected him, laughed at him," Jordan said. "They made fun of his lack of English speaking skills. It made him feel isolated compared to the other students."
Around 10:30 a.m. Monday, after planning the attack for weeks, Goh arrived at the school in an industrial park near Oakland's airport, police said. Upon entering the building, Goh was intent on finding a female school administrator who wasn't there, Jordan said.
Goh then accosted the receptionist, marching her to a classroom, he said.
Goh "started ordering people to stand up, started yelling at them," the police chief said. "They started freaking out. He asked them to line up. Some did, some didn't, and that's when he began to shoot."
By the time police arrived, five of the victims were already dead. Two died later in the day at the hospital.
Goh appeared to have selected his victims at random and none were his alleged tormentors. So far, Goh has not shown any remorse, investigators said,
Those killed in the shooting have been identified as Katleen Ping, 24, of Oakland; Lydia Sim, 21, of Hayward; Bhutia Tshering, 38, of San Francisco; Sonam Choedon, 33, of El Cerrito; Judith Seymore, 53, of San Jose; Kim Eunhea, 23, of Union City; and Doris Chibuko, 40, of San Leandro.
At Oakland's Allen Temple Baptist Church on Tuesday night, Mayor Jean Quan joined pastors from the Bay Area's Korean Christian community in calling unity and peace in their often troubled city.
"America has to look into its soul," Quan told the audience. "This is America where you can find a gun easier than you can find mental health services."
Among those attending the service were friends of Ping, the slain receptionist who came to the U.S. from the Philippines in 2007 and leaves behind a 4-year-old son, according to her family.
Bev Concepcion, a nursing instructor who often had lunch with Ping, was supposed to teach a class Monday morning, but the receptionist told her to teach the evening class instead. Concepcion said she's still not sure why, but that last-minute change may have saved her life.
"She's a very sweet young lady, very hard working and family-oriented," Conception said after Tuesday's service. "It's so sad. It's very tragic, very painful. She's my very, very close friend and now she's gone."
Associated Press writers Zinie Chen Sampson in Gloucester, Va., Terry Collins in Oakland and Marcus Wohlsen in San Francisco contributed to this report.
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