Both Dhaliwal brothers were hospitalized with head wounds after the maulings. Matthews said in the warrant application that Paul Dhaliwal's blood alcohol level had been measured after the attack at 0.16 percent, twice the legal level for drunkenness. She did not indicate exactly when the test had been conducted.

Kulbir Dhaliwal's blood alcohol level was 0.04 percent, and Sousa's was 0.02 percent, Matthews said.

All three also had marijuana in their systems, Matthews said. The drug can stay in blood for several days, but Kulbir Dhaliwal told police that the three had smoked marijuana and had each had "a couple shots of vodka" Christmas Day before leaving the brothers' home in San Jose, the affidavit said.

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According to the elder Sousa's account to police, Dhaliwal told him that he, his brother and the younger Sousa had been "waving their hands and yelling at the tiger" just before the animal bounded up a 12 1/2-foot wall from its dry moat and attacked them.

Paul Dhaliwal - referred to in affidavit by his formal name, Amritpal - "said the three of them were standing on the railing looking at the tiger," Sousa told police.

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Dhaliwal told Sousa that "when they got down they heard a noise in the bushes, and the tiger was jumping out of the bushes" on Paul Dhaliwal, the affidavit said.

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An autopsy conducted by a zoo veterinarian on the Siberian tiger after police shot it to death showed that the animal had been "very determined to get out," Matthews said. Its claws were broken and splintered by clambering up the concrete moat wall, Matthews quoted the veterinarian as saying.

"This behavior may be consistent with a tiger that has been agitated and/or taunted," Matthews said.