Nick McGlashan, who was one of the cast members of the television series Deadliest Catch, died on Sunday in Nashville. While the cause of death is currently unknown, his sister confirmed his passing in a tweet, urging her followers to “hold their loved ones tight.”

Deadliest Catch is a television show on Discovery that follows the lives of crew members that work on a fishing vessel on the Bering Sea. Discovery released a statement on McGlashan’s death.

“Our deepest sympathy goes out to Nick’s loved ones during this difficult time. Nick came from a long line of crabbers and was known for his great depth of knowledge. He also had a sharp sense of humor even in the most difficult conditions. He will be deeply missed by all those who knew him.”

Working on the show since 2013, some of his struggles were seen on screen, including his substance abuse resulting in him being kicked off the boat in season 13. In a magazine article this past May, McGlashan revealed that he had been abusing alcohol, heroin and methamphetamine, and had overdosed three times before getting sober in 2016.

McGlashan was a seventh generation fisherman, born and raised in Alaska. He had begun fishing on a boat at the age of 13.

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