SAN FRANCISCO, Jan. 11 (UPI) -- Officials say there is potential evidence supporting the idea that three young men may have provoked a Christmas Day tiger attack at the San Francisco Zoo.
The Siberian tiger somehow escaped from its enclosure and attacked the three. One was killed and the other two were injured before police killed the big cat.
The San Francisco Attorney's office said apparent evidence of drug use was discovered in the car the three men had driven to the zoo the day of the deadly mauling.
Although there is no direct evidence the victims teased or taunted the animal, the San Francisco Chronicle said Friday that drug use could support the theory and help defend the zoo and the city in pending civil litigation.
The newspaper said investigators also located evidence that could link the men to foreign objects found in the tiger's enclosure.