(NEWSER) – One person is dead and three others injured after they were shot on the campus of Seattle Pacific University today. Police say the lone gunman is in custody. On its Twitter feed, the department says the shooter entered Otto Miller Hall this afternoon and shot four people before being disarmed by a university staffer while reloading. A male victim in his 20s died at Harborview Medical Center, reports AP. A 20-year-old female victim remains critically injured. The other two victims, both males in their 20s, are in satisfactory condition with lesser injuries. With the suspect in custody, the school has lifted its lockdown, but there's no word yet on what might have prompted the shooting.