SAN FRANCISCO (KCBS)  -- The teenager killed during the Christmas Day tiger mauling at the San Francisco Zoo had alcohol and marijuana in his blood stream, according to a toxicology report released Tuesday.

The autopsy report by the San Francisco Medical Examiner's Office shows 17-year-old Carlos Sousa died of blunt force injuries to his head and neck.

Besides suffering many punctures and scratches to his head, neck, and chest, the boy had a fractured skull and spine. The report says his jugular vein had been cut.

Sousa was with Paul and Kulbir Dhaliwal at the San Francisco Zoo on Dec. 25 when a Siberian tiger escaped from an enclosure and attacked the three of them. The two brothers were also injured during the mauling.

(jro)