Singer Melissa Etheridge announced Wednesday that her son Beckett Cypher died at the age of 21.
In a statement on Twitter, Etheridge said the cause was related to an opioid addiction.
"Today I joined the hundreds of thousands of families who have lost loved ones to opioid addiction," she wrote. "My son Beckett, who was just 21, struggled to overcome his addiction and finally succumbed to it today. He will be missed by those who loved him, his family and friends."
The 58-year-old singer added that her "heart is broken."
"We struggle with what else we could have done to save him and in the end we know he is out of pain now," she said. "I will sing again, soon. It has always healed me."
Cypher was one of two children Etheridge shared with former partner Julie Cypher. Beckett and his sister, Bailey, were born via artificial insemination.
Their biological father was musician David Crosby, of Crosby, Stills & Nash fame.
Etheridge had been holding daily concerts from her home through Facebook Live during the coronavirus pandemic. Cypher's death was initially reported in a tweet from her team announcing that Wednesday's concert was canceled.