Brooklyn-based rapper Ka, born Kaseem Ryan, died on Saturday, Oct. 12. He was 52 years old.

“We are heartbroken to announce the passing of Kaseem Ryan (1972-2024), the rapper and producer known as Ka, who died unexpectedly in New York City on Oct. 12, at the age of 52. Born and raised in Brownsville, Brooklyn, Ka lived a life of service — to his city, to his community, and to his music,” a statement shared to his Instagram profile read.

“As a 20-year veteran of the New York City Fire Department, he put his life on the line to protect his fellow citizens. Ka rose to the rank of FDNY captain and was a first responder on September 11, 2001 during the attacks on the World Trade Center. He leaves an extraordinary legacy as a recording artist, including 11 remarkable self-released solo albums. Ka is survived by his wife, mother and sister. We kindly ask that the privacy of Ka’s family and loved ones be respected as they grieve this incalculable loss.”

PEOPLE has reached out to the New York City Fire Department for comment.

Ka emerged in the underground New York rap scene in 1993 as part of hip-hop group Natural Elements before forming his own duo, Nightbreed, with his friend Kev.

In 1999, 27-year-old Ka joined the New York City Fire Department and shelved his music career, rising in the ranks, being a first responder during the Sept. 11 attacks on the World Trade Center and eventually becoming captain. He connected with Wu-Tang Clan member GZA and picked up a microphone almost a decade later in 2008 to be reintroduced on their collaborative track “Firehouse” off the producer/rapper’s Pro Tools. Ka would then go on to release his solo debut, Iron Works, the same year.

The emcee built a loyal fanbase in New York’s underground hip-hop community and self-produced and self-funded his music for most of his career, operating out of his home. He maintained his firefighting career and his privacy, alluding to his day job in a 2015 interview with Passion of the Weiss, saying, “I’m living two lives, man. I’m trying to be who I am in the day and then trying to feed my soul at night with being the artist that I want to be.”

On Aug. 21, 2013, over a week after Ka’s Honor Killed the Samurai was released to critical acclaim, The New York Post published an expose on the rapper’s true identity as a firefighter. With that knowledge made public, Ka continued to work for the fire department up until his death. He also released his final album, The Thief Next to Jesus, in August, only two months before his death.

The Alchemist, a seminal New York hip-hop producer, paid tribute to Ka on X, writing, “I always called him a living PROPHET because thats what he was to us. Me and Roc [Marciano] always said when KA rapped it was like he was delivering his words from the top of a mountain off a stone tablet. The truest man and artist I have ever been lucky enough to cross paths with.”

Ka is survived by his wife, film producer Mimi Valdes, his mother, and his sister.