NEW YORK — Philip Seymour Hoffman, who won the Oscar for best actor in 2006 for his portrayal of writer Truman Capote in Capote and created a gallery of other vivid characters, many of them slovenly and slightly dissipated comic figures, was found dead Sunday in his Greenwich Village apartment with what law enforcement officials said was a syringe in his arm.
He was 46.
The officials told The Associated Press that glassine envelopes containing what was believed to be heroin were also found with Hoffman. Those items are being tested.
The law enforcement officials, who spoke to The Associated Press on condition of anonymity because they are not authorized to speak about evidence found at the scene, said the cause of death was believed to be a drug overdose.
Hoffman — no matinee-idol figure with his tubby, lumpy build and limp blond hair — made his career mostly as a character actor, and was one of the most prolific in the business.
The stage-trained actor’s rumpled naturalism made him one of the most admired performers of his generation. He was nominated for Academy Awards four times in all.
Hoffman spoke candidly over the years about past struggles with drug addiction.
After 23 years sober, he admitted in interviews last year to falling off the wagon and developing a heroin problem that led to a stint at a rehabilitation facility.
The law enforcement officials said Hoffman’s body was discovered in a bathroom by a friend who made the 911 call and his assistant.
In one of his earliest roles, he played a spoiled prep school student in Scent of a Woman in 1992.
One of his breakthrough roles came as a gay member of a porno film crew in Boogie Nights, one of several movies directed by Paul Thomas Anderson that he would eventually appear in.
He often played comic, slightly off-kilter characters in movies like Along Came Polly, The Big Lebowski and Almost Famous.
More recently, he was Plutarch Heavensbee in The Hunger Games: Catching Fire and was reprising that role in the two-part sequel, The Hunger Games: Mockingjay, which is in the works.
And in Moneyball, he played Art Howe, the grumpy manager of the Oakland Athletics who resisted new thinking about baseball talent.
Just weeks ago, Showtime announced Hoffman would star in Happyish, a new comedy series about a middle-aged man’s pursuit of happiness.
In The Master, he was nominated for the 2013 Academy Award for best supporting actor for his role as the charismatic leader of a religious movement.
The film, partly inspired by the life of Scientology founder L. Ron Hubbard, reunited the actor with Anderson.
He also received a 2009 supporting nomination for Doubt, as a priest who comes under suspicion because of his relationship with a boy, and a best supporting actor nomination for Charlie Wilson’s War, as a CIA officer.
Two films starring Hoffman premiered last month at the Sundance Film Festival: the espionage thriller Most Wanted Man, directed by Anton Corbijn, and God’s Pocket, the directorial debut of John Slattery.
Hoffman is survived by his partner of 15 years, Mimi O’Donnell, and their three children.