The Oscar winner was 46.
Academy Award-winning actor
The two 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.
In late May, Hoffman finished a 10-day stint in a rehab program for a drug problem that included snorting heroin.
The actor had struggled with substance abuse in the past.
Hoffman has three children — Cooper, 10, Tallulah 7, and Willa, 5 — with costume designer Mimi O'Donnell.
Hoffman won the best-actor Oscar for Capote in 2006. He was nominated for supporting-actor Oscars for his roles in The Master, Doubt and
He most recently starred as
"He's one of the best actors on the planet," Catching Fire director
Hoffman had recently attended the Sundance Film Festival where he was debuting two films: God's Pocket and A Most Wanted Man. Showtime had recently announced Hoffman would star in a new comedy TV series, Happyish.
Hoffman received wide acclaim for his stage work, as well.
On Broadway, he earned Tony nominations acting in revivals of the classics True West,
He was a member of New York's
In 2005, Hoffman spoke to USA TODAY about his role in Capote: "I began to see that this wasn't simply an odd man, an odd writer. What he discovered writing In Cold Blood embodies what a lot of people go through. He struggled with who he was. He struggled with finding his place in the world. I think he struggled with how much attention he wanted to cast on himself."
On fan support, he said: "I don't want compliments. I want to know what I'm doing right or doing wrong. No one wants to hear they suck. But sometimes it's the best thing you can hear. It's the only way you're really going to get better."
Contributing: The Associated Press, Elysa Gardner