Friends and family mourn the death of Angus Cloud, the well-loved star of 'Euphoria'

Angus Cloud made a deep impression on viewers and his fellow actors, in a TV and film career that was still rising. He's seen here last fall, attending a dinner at the Strand Bookstore in New York City. (Monica Schipper/Getty Images for Bottega Veneta)

Angus Cloud, whose portrayal of a sensitive drug dealer on HBO's Euphoria endeared him to viewers and was paving the way for a promising film career, died on Monday in Oakland, Calif., according to his family and colleagues.

Cloud was pronounced dead after being found in his family's home. No cause of death was announced. His family noted that he struggled with mental health and was mourning his father, Conor Hickey, who reportedly died in May. Hickey was recently buried in his native Ireland.