Max Rosenblum, Juliana Luchkiw, Robert Vineberg, and Thomas Cushman have been identified as the four people suspected of being involved with selling heroin to Philip Seymour Hoffman before the actor’s death.
Hoffman is thought to have died from heroin overdose, possibly from cheap heroin.
The four were arrested on Tuesday night.
Rosenblum and Luchkiw are a couple and both 22 years old.
Rosenblum is a DJ while Luchkiw is a student at the New School.
They live in the same apartment building as Vineberg, who owns two apartments in the building, one of which he uses as a music studio. Not much is known about Cushman at this point.
320 Mott St. (AP Photo/Seth Wenig)
A reporter films the door of an apartment that was searched by police at 320 Mott St. (AP Photo/Seth Wenig)
One of the apartments searched by police at 320 Mott St. is seen in New York, Wednesday, Feb. 5, 2014. (AP Photo/Seth Wenig)
A couple adds to the flowers placed outside the apartment building of actor Phillip Seymour Hoffman, in New York, Tuesday, Feb. 4. (AP Photo/Richard Drew)
A body is taken from the apartment building that Philip Seymour Hoffman lived in, Sunday, Feb. 2, 2014. (AP Photo/Louis Lanzano)
Staff member from the medical examiners office, left, enters the building containing the home of actor Philip Seymour Hoffman Sunday, Feb. 2. (AP Photo/John Minchillo)