Joaquin Phoenix GettyImages_83528425.jpg photo courtesy of Getty Images

When two-time Oscar-nominee Joaquin Phoenix announced last week that he was retiring from acting, we began to wonder what prompted the talented thespian to make such an announcement. Now, The New York Post reports that friends close to the actor are worried about him, and after his odd behavior at Paul Newman's California Camp Benefit Concert in San Francisco earlier last week, others are beginning to grow concerned that something isn't quite right with the actor.

One attendee said the Walk The Line star "was out of it," and reports that Joaquin left in the middle of the event, only to "[wobble] back in a bit later." The source added, "It was odd. He was slurring his words and was unsteady on his feet." At the event, the actor broke his retirement news to Extra, and on Saturday night he displayed writing on his hands that said "Bye!" and "Good" at the AFI Film Festival in Los Angeles.

A rep for Phoenix released the following statement:
"He's fine. He just wants to focus on music, and he'll be at the screening of his film Two Lovers on Saturday night in LA, and he's directed a number of music videos over the past couple of years."