MILWAUKEE – The man who killed six Sikh worshippers at a Wisconsin temple before fatally shooting himself had a history of alcohol problems and underwent a noticeable personality change in the preceding year, according to an investigative report released Tuesday.

Wade Michael Page's sister told investigators he had a bloated appearance that made her wonder if he had been drinking recently, the report said. Kimberly Van Buskirk also said she noticed her brother become more intense over the past year, as if he had lost his wit and sense of humor. He took everything literally, she said.

Page, 40, opened fire Aug. 5 before a service was to start at the Sikh Temple of Wisconsin in suburban Milwaukee. He killed six people and wounded four others before he was shot in the abdomen during a firefight with police. He died after he shot himself in the head.