4 dead after police standoff at a Colo. townhome

AURORA, Colo. (AP) - Authorities say they have an idea of the identities of three people found dead inside an Aurora townhome Saturday after a gunman barricaded himself inside.

But, police Sgt. Cassidee Carlson declined to release the relationship between the victims and the shooter, who was killed as SWAT officers stormed his home. It's unclear if the suspect shot himself or was killed by officers.

The suspect held officers at bay for nearly six hours after neighbors reported gunfire at 3 a.m.

Investigators said two men and a woman appeared to have been killed before officers arrived.

A fifth person escaped unharmed. A motive for the killings is unknown.

The shootings occurred about four miles southeast of the Aurora Mall, where 12 people were killed and dozens were wounded by a gunman at a midnight showing of "The Dark Knight Rises" on July 20.