Cody Longo, an actor known for his roles in the television series “Hollywood Heights” and “Days of Our Lives,” was found dead on Wednesday at his home in Austin, Texas. He was 34.

He died in his sleep, most likely from accidental alcohol poisoning, his representative, Alex Gittelson, said. Mr. Gittelson said that Mr. Longo had struggled with alcohol addiction for several years, but he believed that Mr. Longo had recently been sober.

Mr. Longo was a singer, songwriter, musician and music producer and served as a music supervisor and executive producer on film and television projects. He released his first EP, “Atmosphere,” in 2012 and the single “She Said” in 2013.

Mr. Longo appeared on “Days of Our Lives” as Nicholas Alamain in 2011 and in the Nick at Nite drama “Hollywood Heights” as Eddie Duran, a music superstar, in 2012.

In 2016, he had roles on the ABC series “Nashville,” “Secrets and Lies” and “The Catch.” Mr. Longo starred in the pilot for “Santa Cruz” on Fox and in the ABC Family teen drama “Make It or Break It.” He also appeared in the movies “High School” and “Piranha 3D” in 2010.

Mr. Longo was born in Colorado on March 4, 1988, and studied psychology and film at the University of California, Los Angeles. He began acting professionally in 2009, according to his website.

“He had taken some time away from acting to pursue his music career and spend more time with his family in Nashville,” Mr. Gittelson said, “but we had kept in touch regularly and he was excited to get back into acting this year.”

Mr. Longo is survived by his wife, Stephanie, and three children, Lyla, Elijah and Noah.