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OTRC: Philip Seymour Hoffman death: 4 arrests, autopsy results 'inconclusive'

Philip Seymour Hoffman appears at a screening for 'God's Pocket' at the 2014 Sundance Film Festival in Park City, Utah on Jan. 17, 2014. The Oscar winner was found dead in a New York City apartment on Sunday, Feb. 2, 2014. He was 46. (Seth Browarnik / Startraksphoto.com)

New York police arrested four people on drug charges during a raid carried out as part an investigation into the death of actor Philip Seymour Hoffman, who was found dead over the weekend with a syringe in his arm.

The official cause of the death of the Oscar winner, who has battled drug and alcohol addictions, has also not been announced. Hoffman died in his apartment in the city and about 70 bags of heroin were found inside, investigators told ABC News earlier this week. Meanwhile, the medical examiner's office has completed its autopsy and has deemed the results to be "inconclusive," the outlet reported. Results of toxicology tests are due next month.

Police said late on Tuesday that three men and a women were arrested and are suspected of dealing heroin out of another New York residence, the outlet reported, adding that more than 350 bags of the narcotic were found there. On Wednesday, three of the suspects were arraigned at a New York court, while the fourth, a man, was not charged due to lack of evidence.

An attorney for one of the men who was charged denied any connection to Hoffman's death. The man, a musician, is believed to be an acquaintance of the actor and had his number on his cell phone, ABC News reported.

Police had confirmed to ABC News that the arrests stemmed from information developed during the investigation into Hoffman's death but did not reveal the specific connection. A law enforcement official also said Hoffman withdrew $1,200, in six increments, from an ATM inside a supermarket near his home the day before his death.

Meanwhile, a private funeral for Hoffman is planned. The actor, who died at age 46 and had battled drug and alcohol addiction, is survived by his girlfriend and their three children, a son and two daughters.

"There will be a private funeral service held in New York for the family and close friends of Philip Seymour Hoffman," his spokesperson told ABC News. "Plans are also underway for a memorial service later in the month also to be held in New York."

"In lieu of flowers, the family requests donations be made in Phil's name to two charities that were very close to his heart: The DreamYard Project and the Christopher and Dana Reeve Foundation. The family wishes to thank everyone for their continued support and good wishes."

(Pictured above: Philip Seymour Hoffman appears at the Sundance Film Festival in Park City, Utah on Jan. 17 to promote his latest movie "God's Pocket." He posed for photos with co-star Christina Hendricks of "Mad Men" fame and spoke with OTRC.com about the film and about "The Hunger Games." Click on the images above to watch the videos.)

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