Oakland Zoo Takes Precautions After SF Tiger Attack

This undated file photo provided by the San Francisco Zoo shows Tatiana, a female Siberian tiger. Tatiana, the tiger that mauled a zookeeper last year escaped from its pen at the San Francisco Zoo on Tuesday Dec. 25, 2007, killing one man and injuring two others before police shot it dead, authorities said. (AP Photo/San Francisco Zoo, File)
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SAN JOSE, Calif. (AP) - Officials at the Oakland Zoo are making plans to raise the height of the wall surrounding its tiger pen in the wake of the deadly tiger attack in San Francisco.

Zoo officials say the concrete wall and chain-link fence surrounding the two tigers range from 13-and-a-half to 16 feet, and they're deciding how much higher to raise the wall.

The move comes as it becomes increasingly clear that a tiger climbed over a wall at the San Francisco Zoo when it attacked three people on Christmas Day, killing one. The wall was well below the recommended minimum of 16 feet for U.S. zoos.

About 100 people gathered yesterday for a vigil remembering 17-year-old Carlos Sousa, who was killed by the tiger. The other two victims were released from the hospital.

The San Francisco Zoo has been closed since the attack. Officials say it will reopen Thursday.