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UPDATE: Representatives for James Horner confirmed that the composer died on Monday in a plane crash just outside Santa Barbara, California.

“It is with the deepest regret and sorrow that we mourn the tragic passing of our dear colleague, long-time client and great friend, composer James Horner,” a statement from from Gorfaine/Schwartz Agency, which represents Horner. “Our thoughts and prayers are with James’ family at this difficult time, and also with the millions of people around the world who loved his music. A shining light has been extinguished, which can never be replaced. It has been an honor and a privilege to have worked with James since the inception of our agency. For more than three decades, his unique creative genius made an indelible imprint on each of our lives and on those of the entire Hollywood community. There is not a person in our GSA family who wasn’t touched by the power and reach of his music, and who isn’t diminished by his loss.”

Earlier on Tuesday, Goraine/Schwartz put out another statement on the crash.

“Although we are all awaiting official confirmation that our dear friend and client James Horner was in fact the pilot, we are shocked and deeply saddened to learn that his single-engine aircraft was involved in a fatal crash yesterday morning in northern Ventura County,” the Gorfaine/Schwartz Agency said in a statement. “Our thoughts and prayers remain with James’ family at this difficult time. We can offer no further comment for the time being, except to ask that the family’s privacy be respected in the days ahead.”

Horner was 61. More on the composer’s life can be found here.

EARLIER: James Horner is unaccounted for after a fixed wing single-engine plane registered to the famed composer crashed in Southern California, on Monday, killing the pilot.

Horner is a two-time Oscar winner, and a 10-time nominee overall. He has produced more than 150 scores in his career, including iconic soundtracks for Star Trek II, Field of Dreams, Braveheart, Apollo 13 and A Beautiful Mind. His Oscar wins came fo Titanic, as Horner not only wrote the score for James Cameron’s epic drama, but the music for Celine Dion’s smash-hit theme song, “My Heart Will Go On.”

The identity of the pilot, the only person on board at the time of the crash, has not yet been confirmed by the medical examiner. Many feared Horner was dead, however, including director Ron Howard. “My heart aches for his loved ones,” Howard, who made seven films with Horner, wrote on Twitter. Other celebrities and former collaborators weighed in with tributes to Horner, including Russell Crowe, Josh Groban and Kirstie Alley.

Score work by the 61-year-old, an avid flyer, will next be heard in Southpaw, Antoine Fuqua’s forthcoming boxing film with Jake Gyllenhaal.