Malcolm-Jamal Warner’s mother opened up in an interview Monday about the sudden loss of her son.

In her first interview since “ The Cosby Show ” star’s passing, Pamela Warner shared new details about the accidental drowning that led to his death.

“His wife and daughter had been in Costa Rica three weeks prior,” Pamela told “ Good Morning America’s ” Robin Roberts. “She is homeschooled, and this was part of an immersion program.” Malcolm later arrived in Costa Rica on the third week.

His mother also confirmed her granddaughter was not in the water with the actor when he drowned.

“They were in the water, I think maybe chest deep, even at that — maybe waist deep,” she said of her son and another man who was swimming near him. “There was an undertow, and my son was not an experienced

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