Multiple sources are reporting that actor Philip Seymour Hoffman, 46, was found dead in his New York apartment this morning.

According to The Wall Street Journal, the Oscar-winning actor's body was discovered around 11:15 a.m. Eastern by screenwriter David Katz. The WSJ also says the New York Police Department is investigating, and the Office of the Chief Medical Examiner is working to determine the exact cause of death.

Hoffman won the Academy Award for best actor in 2005 for his portrayal of author Truman Capote in the film Capote. His 20+ year career also included roles in Boogie Nights, The Talented Mister Ripley, Mission: Impossible III, Cold Mountain, Moneyball, Almost Famous, Charlie Wilson’s War, Doubt and The Master. Most recently he appeared in The Hunger Games: Catching Fire, and was filming the sequels to that film. He also received two Tony nominations for his work on the stage in True West and Long Day’s Journey Into Night.