Justin Theroux devastated with Philip Seymour Hoffman's sudden demise

 Actor-director Justin Theroux is said to be devastated with actor Philip Seymour Hoffman's sudden demise.

He paid a visit to see Hoffman's estranged partner Mimi O'Donnell, as well as their children Cooper, 10, Tallulah, seven and Willa, five.

"Justin is totally broken up about losing Phil. He's doing his best to provide some comfort to Mimi and the kids. He can't believe this happened," usmagazine.com quoted a source as saying.

Hoffman, who was found dead in his apartment Feb 2, is said to have been close to Theroux.