'The Cosby Show' Star Malcolm-Jamal Warner Dead At 54, Accidental Drowning

3:40 PM PT -- TMZ has just learned there was a second individual who was injured during the incident. The Costa Rican Red Cross tells TMZ ... the second individual was rushed to a local clinic in critical condition. Their current condition is unknown.

3:10 PM PT -- Judicial Investigation Agency tells TMZ ... Malcolm was rescued by bystanders and taken to the shore where he received aid from the Costa Rican Red Cross. He was declared dead at the scene. The body was sent to the Judicial Morgue in San Joaquín de Flores, Heredia for an autopsy.

10:53 AM PT -- Warner died of asphyxia after he was caught by a high current in the ocean, according to ABC News. His body was reportedly found Sunday afternoon.

"The Cosby Show" alum Malcolm-Jamal Warner has died in Costa Rica at the age of 54, TMZ has learned.

TMZ has a reliable source who says Warner died as a result of an accidental drowning while he was vacationing with his daughter.

As you know, Malcolm‑Jamal Warner straight‑up owned the '80s as Theodore Huxtable on "The Cosby Show," snagging an Emmy nod and locking in his spot in TV royalty.

He kept the hustle going with sitcom fav "Malcolm & Eddie," voiced one of the coolest cartoons -- yeah, "The Magic School Bus" -- and even flexed his music chops with a Grammy win in 2015.

Most recently, he was hosting the podcast "Not All Hood," and his latest episode dropped just 3 days ago.

Malcolm‑Jamal leaves behind a wife and daughter -- he chose not to publicly share their names, always keeping his family life private.

He was 54.