Joaquin Phoenix Pays Respects to Philip Seymour Hoffman at Mimi O'Donnell's Apartment

Joaquin Phoenix keeps a low profile while dropping by Philip Seymour Hoffman‘s long-term partner Mimi O’Donnell‘s apartment on Tuesday (February 4) in New York City.

The 39-year-old actor was the third well-known celebrity to visit that day, the other two well known actors were Justin Theroux and Ethan Hawke.

PHOTOS: Check out the latest pics of Joaquin Phoenix

In case you missed it, four suspects have been arrested in connection to Philip‘s death over the weekend of an apparent drug overdose.

FYI: Joaquin and Philip were co-stars in the highly acclaimed movie The Master.