Pittsburgh,Pa. Four people have died and nine other were injured in a shooting at the L.A. Fitness in Collier Township Tuesday.

Around 9 a.m. Wednesday the names of the three victims who died were released well as the gunman, by the county coroner's office.

Elizabeth Gannon, 49, of Pittsburgh (Scott Twp) and Heidi Overmier, 46, of Carnegie and Jody Billingsley, 38, of Mt. Lebanon were killed in the shooting.

The alleged shooter is George Sodini, 48, of Scott Township.

KDKA-TV has learned that Sodini was keeping an online diary where it appears as if he was planning the shooting for about nine months. He also detailed on the site how he attempted to carry out the shooting once before, but backed out.

The gunman, who was carrying a bag with him, reportedly turned off the lights in a workout room and started shooting.

KDKA-TV's David Hall has learned that five women were taken to UPMC Mercy Hospital after the shooting. At this time, three of those women are listed in serious condition. The other two remain in critical condition.