Bill Cosby mourns on-screen son Malcolm-Jamal Warner, says death reminds him of own son

Malcom-Jamal Warner (L) and Bill Cosby (R) [Courtesy]

Bill Cosby has mourned Malcolm-Jamal Warner, who died at the age of 54.

Cosby's spokesperson, Andrew Wyatt, said Warner's death reminded Cosby of his own son's death.