Sidney Brown, the Grammy-winning record producer who worked under the professional name Omen, has died. He was 49.

Brown was found in his Harlem apartment after employees at Barawine Harlem, a Manhattan wine bar where he worked, raised the alarm when he failed to show up for a shift, his mother, Martha Brown, told TMZ. A relative discovered his body on Saturday, Sept. 13, according to family accounts; the exact date of his death has not been released and no cause has been disclosed.

Over the course of his career, Brown collaborated with prominent hip-hop and R&B artists, including Drake, Beyoncé and Lil Wayne, as well as Action Bronson, Fabolous, Memphis Bleek and Redman. Industry references credited him as a prolific contributor behind the boards, and he received a Grammy during his career.

Barawine Harlem posted a message on Instagram expressing shock and sorrow, saying, "It is with shock and deep sadness we have heard about the passing of our dear friend Omen Sidney Brown." The post said colleagues and friends were reeling from the loss.

News of Brown’s death prompted messages of condolence on social media from fans and peers. One post read, "I can’t believe I’m writing this. RIP friend!" Another said, "We just talked not long ago, and now it feels surreal that you’re no longer here. I’ll always remember the way you lit up every conversation, your kindness, and the way you could make even the most ordinary moments feel special. I’m grateful for every word, every laugh we shared. You’ll be missed more than words can express. Thank you for everything Omen." Other posts thanked him for his support and advocacy.

Representatives for Brown could not be reached immediately for comment, and authorities have not released information on any investigation or medical findings. The New York Police Department and the Office of the Chief Medical Examiner did not issue public statements as of the initial reports.

Brown’s credits spanned mainstream and underground acts, and his work was cited by collaborators as part of the sound on numerous recordings over several decades. He had maintained ties to the New York music community while also holding a job at the Harlem establishment where colleagues said he had recently been working.

Family members, friends and associates have begun to share memories and tributes publicly as information about his death remains limited. No funeral or memorial arrangements have been announced.

This is a developing story.