'Cosby Show' star Malcolm-Jamal Warner dies by drowning at 54

American actor Malcolm-Jamal Warner, who played Bill Cosby's son Theo in the 1980s television hit "The Cosby Show," died at age 54 on Monday by drowning, a law enforcement source confirmed to Reuters.

Warner was vacationing in Costa Rica with his family, media reported. The Central American nation's judicial investigation department (OIJ) confirmed that a US citizen with the last name Warner had drowned after being pulled out to sea by a rip current.

He was declared lifeless at the scene by Red Cross lifeguards, the department said.

Representatives for Warner did not immediately respond to requests for comment.

Warner won the outstanding actor in a comedy series award from the NAACP for the series "Reed Between the Lines" in 2012.

"The Cosby Show," which aired from 1984 to 1992, was one of the earliest portrayals of a successful, stable and wholesome Black American family on television, which challenged negative stereotypes. Cosby portrayed a doctor and Warner played his only son.

Warner, who was born on August 18, 1970, grew up in Jersey City, New Jersey, with his mother, Pamela, who eventually became his acting manager. He was named after civil rights leader Malcolm X and jazz musician Ahmad Jamal.

At an early age, Warner found he was interested in acting, which launched his career as a child performer and set him on the path to attend The Professional Children's School in New York.

While he had some small television roles early in his career, playing Theo Huxtable on "The Cosby Show" served as Warner's breakout role.

The actor received an Emmy nomination in 1986 for outstanding supporting actor in a comedy series for his role on the NBC series. Warner won a Grammy award in 2015 for best traditional R&B performance for the song "Jesus Children".

The 54-year-old actor also had roles in "The Cosby Show" spin-off series "A Different World," "Jeremiah," "Sons of Anarchy," "Suits" and hosted "Saturday Night Live" in 1986.

He has a wife and daughter but never publicly disclosed their names.