Disturbing new details were revealed this morning in the shooting rampage at Oikos University yesterday in Oakland, Calif.

Oakland Police Chief Howard Jordan explains the investigation to Ashleigh Banfield on "Early Start" this morning, saying the shooter has been talking with police overnight and has provided more information on what happened. The suspect, 43-year-old One Goh, opened fire at the small religious college allegedly because he was upset at the school for dismissing him.

Jordan explains the shooter walked into the school's single-story building on Monday, took a receptionist hostage and went looking for a particular female administrator. Goh wanted to exact revenge on a particular female administrator and inflict harm on the school. The victims were random, and they were unable to resist him because it all happened so quickly.Jordan declined to say the name of the administrator, or if she was on site when the shooting occurred.

Jordan said Goh lined up all his victims in a classroom and began shooting them one by one, then left for a short period of time, came back went through other parts of the school just shooting. "He casually walked out and left in one of the victim's vehicles," Jordan added. He also explained that there was a point where Goh had a chance to reload and fire multiple rounds.

"He came back into the classroom after he left, went to another location, and began shooting again because he realized that there were other students hiding in the adjacent classroom," Jordan explains. "He began shooting into that classroom again. Then left out the back, not through the same entrance that he came in." He added that though they have not located the weapon, they have enough ballistics evidence to determine it was a semi-automatic handgun.

Charges are expected to be filed Wednesday. See the full interview below.