Shooting at U. of Alberta leaves three security officers dead

Update (6/18/12): Travis Baumgartner apprehended, G4S releases names of deceased security officers. Read more on my blog, Editor's Notes.

Update (2:30 p.m. EST): Security Director News called Robin Steinberg, a spokeswoman for G4S, to learn whether or not she was aware of Travis B. Baumgartner's Facebook photo, which shows the suspect in a black balaclava and dark sunglasses. She couldn't comment because it's an ongoing investigation. "We've told the police we're going to cooperate as best as we can, because we have no idea what's going on at this point," she told SDN. "I cannot disclose anything. ... Foremost our priority right now is to cooperate with the police and to focus on our employees and the families of these victims."

Update (2:07 p.m. EST): A Facebook photo of Travis Brandon Baumgartner, the rogue G4S security officer now a "person of interest" in the armored car robbery at the University of Alberta that left three G4S officers dead and another wounded, shows him in a black balaclava and dark sunglasses. Here's the photo.

Update (1:41 p.m. EST): Edmonton police now say a fifth G4S security officer is "a person of interest" in the attempted armored-car robbery that left three security officers dead and another wounded, according to a police statement. Travis Brandon Baumgartner, 21, is now the subject of a massive manhunt.

EDMONTON, Alberta—Three security officers are dead and another is wounded after an overnight attempted robbery of a G4S armored car at the University of Alberta, according to a statement from the security company.

In a statement, G4S acknowledged that three of its security officers were killed and another is in critical condition after a shooting at the university's HUB Mall, which is both a student residence and retail mall.

"We are shocked and horrified by the incident and would like to express our heartfelt condolences to the victims’ families and to all of our employees in Edmonton," the statement reads. "We are doing everything we can to assist the Edmonton Police with their investigation and would like to thank them for their hard work and dedication. The investigation is in its preliminary stages and the police will release further details as they become available."

Two of the slain security officers were found near ATMs in the concourse of the HUB Mall, while another was found outside near a G4S van, according to the National Post. The dead include two men and a woman. All four security officers were armed, the news site reports.

Police have not identified the suspects and have not acknowledged whether any money was stolen, the National Post reports.

The security officers were employed by G4S Cash Solutions Ltd., which, according to its website, "supplies financial, retail and commercial customers with secure cash transportation, cash management solutions and ATM solutions." G4S has more than 100 branches and employs more than 12,000 personnel in Canada, the website says.

Story will be updated as more is learned.