In the ambulance to the hospital just after a tiger mauled 17-year-old Carlos Sousa Jr. to death, paramedics heard Sousa's two friends make a pact of silence about "what we did," the San Francisco Chronicle reports. The two brothers, accused by one witness of taunting the tiger before the attack, have since refused to let police search their car, cell phone records, and photos.
The two survivors had been drinking and using marijuana at the time of the attack, the Chronicle reports. Meanwhile, the San Francisco zoo has beefed up its enclosures and is expected to open today. Zoo officials said yesterday that the wall around its polar bear enclosure, like that of the tiger enclosure, also is too low and is being raised.