Mark Ruffalo, who is grieving the tragic death of his younger brother Scott from a gunshot wound, has dropped out of the independent film Greenburg, according to the Hollywood Reporter. His replacement in the film, written and directed by Noah Baumbach, will likely be Ben Stiller. Meanwhile, TMZ.com reports that Shaha Mishaal Adham, who was a friend of Scott’s, told police he died during a game of Russian Roulette. She said she was at Ruffalo’s apartment to pick up her Land Rover, which he’d borrowed. Another person, who has not been identified to media, was also present. According to Adham, after Ruffalo shot himself in the head, she left the home in a panic and called her boyfriend, Brian Scofield, who called 911. Both were questioned by police and released. The investigation continues.