UPDATE 11:34 -- Four people including a gunman were killed inside an Aurora, Colo., townhouse Saturday morning following what police say was a hostage situation, 9News reports. Aurora SWAT team forces shot the gunman, who police have not yet identified, according to the Denver Post. More from the Associated Press: Four people, including an armed suspect, died after an hours-long police standoff Saturday at a Colorado townhome, authorities said. Police Sgt. Cassidee Carlson said a SWAT team was called after gunshots were heard at the Aurora, Colo., home at about 3 a.m. Investigators said three victims, all of them adults, appeared to have been killed before officers arrived. Carlson said the suspect shot at officers at about 8:15 a.m. and was killed during a gunfight about 45 minutes later when police entered the home. It remained unclear if officers shot the suspect or if he shot himself. A motive for the killings also was unknown.