Reggaeton stars are mourning the death of Puerto Rican rapper, producer and songwriter Syko "El Terror."

According to Variety Latino, the reggaeton artist, born Christian Ramos and known for working with hit makers like Don Omar and Daddy Yankee, died at the age of 33 on the morning of Dec. 27, 2015.

Don Omar, whose work with Syko includes songs like "Huérfano de amor" ("Orphanage of Love"), "De hombre a hombre" ("From Man to Man") and "Carta al cielo" ("Letter to Heaven"), was one of the first artist to learn of the news and expressed his grief on social media.

"Rest in Peace my brother," tweeted the "Danza Kuduro" rapper.

Daddy Yankee, a reggaeton pioneer in his own right, shared a photo of the music producer on his Instagram account.


Colombian reggaeton artist, J Balvin also expressed his condolences for the rapper on Instagram by sharing a photo.

Yandel, who worked with Syko on his song "Al Bailar," with pop singer Yuri shared his shock upon learning news of the star's death and shared a clip of Syko's video for "Soy de la Calle" (I'm From the Street). "Sad news my brother @syko_elterror today you left us, my deepest condolences to his family," Yandel captioned the video.

Perhaps the most heartfelt message came from Puerto Rican salsa singer Olga Tañón, who shared a photo of herself and Syko.

"Still shocked with the very sad news of the death of Syko 'El Terror' this morning, one of the best composers of urban music, with all of our greatest respect, we feel it with the soul! Sad, sad, sad. Holy Father, I pray for consolation for his family, wife and young daughters," wrote the music superstar.

Check out a clip of Syko "El Terror's" documentary, where he discussed being a victim of attempted murder, losing friends to violence, changing for his daughter and finding his passion in music.