SF (San Francisco) police on Wednesday investigated whether a Siberian tiger had help in escaping its sf zoo habitat before it killed a teenager and injured two other people .
Police also indicated they were considering whether someone might have let the 9-year-old tiger, out of its exhibit.

Police shot and killed the tiger .
SF Zoo spokeswoman said zoo officials could not comment on how the tiger got out of its habitat, a grotto surrounded by a 15-foot (4.5 meter) moat and 20-foot (6 meter) wall.

“It is an ongoing police investigation and it is still being looked into,” LaMarca said.

( SF ) San Francisco’s medical examiner identified the victim of the fatal tiger attack as Carlos Sousa Jr., 17, of San Jose, California. He was pronounced dead at the scene.

The two other victims, 19- and 23-year-old brothers from San Jose, were reported in stable condition at a San Francisco hospital.

The tiger attacked Sousa in front of its enclosure and the the brothers about 300 yards from it.

SF Zoo now still do investigation about the tiger attack right now