Gun used in Oikos University shooting rampage was bought legally, police say

Law enforcement officers leave Oikos University following a school shooting in Oakland, Calif., Monday, April 2, 2012. A gunman opened fire at the school, killing at least five people, law enforcement sources close to the investigation said.
AP Photo/Noah Berger

(CBS/AP) OAKLAND, Calif. - Police say the gun used in a shooting rampage at Oikos University Monday in California was purchased legally six weeks ago.

Oakland police Chief Howard Jordan says authorities are still searching for the semiautomatic handgun used by 43-year-old One Goh during the attack. However, they have determined that Goh bought the weapon in early to mid-February.

Goh began planning the attack sometime after his expulsion from the school in mid-January, Jordan explained.

According to police, Goh was angry about the expulsion and was targeting a female administrator Monday morning. When he learned she wasn't there, he began to open fire, killing seven people.

Jordan says Goh also had been upset about teasing from classmates over his poor English skills.

Complete coverage of the Oikos University shooting on Crimesider