Cate Blanchett
Actress Cate Blanchett poses backstage with her award for outstanding performance by a female actor in a leading role for the film "Blue Jasmine" at the 20th annual Screen Actors Guild Awards in Los Angeles, Calif., Jan. 18, 2014. Reuters/Lucy Nicholson

Cate Blanchett and Justin Theroux visited Philip Seymour Hoffman’s partner, Mimi O’Donnell, at her home in New York to comfort Hoffman’s family, which is dealing with the sudden death of the acclaimed actor.

Blanchett who first worked with Hoffman in the 1999 film “The Talented Mr. Ripley” was spotted visiting the actor’s partner O’Donnell and their three children. Blanchett did not give any comments to reporters waiting outside the Manhattan apartment, but she was reportedly spotted holding some gifts for the children -- Cooper, 10, Tallulah, seven, and Willa, five.

Hoffman and Blanchett are known to have shared a cordial friendship over the years and, in 2010, Hoffman directed a play “True West” for the Sydney Theatre Company, when Blanchett and her husband Andrew Upton were the company’s joint artistic directors.

Upton, who was upset after he received the news of Hoffman’s sudden death reportedly said: “My thoughts are with Philip’s family at this terrible time.” He added that: “He was an incredible man. A generous and true spirit. The loss is extraordinary.”

Theroux, who acted with Hoffman in the 2005 comedy “Strangers with Candy,” also visited O’Donnell at their apartment.

According to reports, Theroux was shocked by the death of his close friend, and a source told “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.”

Hoffman was found dead in his Manhattan apartment on Sunday afternoon from an apparent drug overdose. The actor who had struggled with a drug problem decades ago had been clean for 23 years until he had a relapse last year, and O’Donnell reportedly told investigators that Hoffman was under the influence of drugs when he died.

The investigating officers are still probing the case and the autopsy report of Hoffman is likely to be out soon, but the official cause of his death will be revealed only after the toxicology tests are completed.