A father died and his son survived Monday's night Trolley Square Shooting. A mother survived but her daughter perished.

Chance bullets, chance fatalities mark Salt Lake's deadliest shooting in recent history. New details continue to emerge about the survivors, the ones who died, the off-duty officer from Ogden being hailed as a hero and the teenage gunman, identified by police as Sulejman Talovic, who began it all.

Police have reported Talovic and his parents came from Bosnia. As of Tuesday, officials with U.S. Immigration and Customs Enforcement (ICE) reported Talovic was a legal resident alien who had been issued a "green card" when he and his family emigrated to the United States in 1998. Talovic received his green card in 2005.

"He is a legal permanent resident of the United States," said ICE spokeswoman Virginia Kice. Although his nationality is listed on immigration documents as Croatian, one of Talovic's relatives said they are Bosnian.

A teacher described Talovic as a loner, but somone who didn't cause trouble.

The Ogden off-duty officer involved with an 18-year-old gunman at Trolley Square has been identified as Ken Hammond, a six-year veteran of the department. He was scheduled to appear at a press conference Tuesday night.

His chief, Jon Greiner, said the officer is "a very level-headed traffic officer. He's just a good, all-around officer. Does his job."

Hammond was involved in a shootout in the crowded mall that eventually left Talovic, a Bosnian refugee from Salt Lake City, dead.

Greiner said a "significant number" of Ogden police officers carry weapons off-duty. In fact, Greiner said, the wife of the officer involved in the shooting has a concealed weapon permit. The woman, who is not in law enforcement, was at the mall Monday evening with her husband for an early Valentine's dinner, but Greiner declined to say whether she was armed. "I'm not going to comment on that at this time," he said Tuesday.

Police identified the mall's shooting victims — five who died and four others recovering from injuries in area hospitals.

Killed were:

• Teresa Ellis, 29.

• Brad Frantz, 25.

• Kirsten Hinckley, 15.

• Vanessa Quinn, 29.

• Jeffery Walker, 53.

Wounded and hospitalized are:

• Carolyn Tuft, 43, (the mother of Kirsten Hinckley).

• Shawn Munns, 34.

• Stacy Hanson, 53.

• Alan "A.J." Walker, 16, (the son of Jeffery Walker).

Police remain tight-lipped about any possible motive behind the rampage, but detectives visited Talovic's South Salt Lake workplace Tuesday morning, Aramark Uniform Services, and questioned employees.