Actor Patrick Muldoon, known for a host of series and films from “Melrose Place” and “Days of Our Lives,” to “Starship Troopers,” died Sunday.

He was 57.

Muldoon’s manager confirmed the actor’s death to Variety, while Deadline reported he died of an out-of-the-blue heart attack.

Born Sept. 27, 1968, in San Pedro, California, Muldoon began acting and modeling during college at the University of Southern California, between football seasons playing tight end for the Trojans. He modeled for Calvin Klein and was a client of the Wilhelmina modeling agency before switching to acting in the early ’90s.

His first television break was playing Matt on two episodes of “Who’s the Boss?” in 1990, followed by an appearance on “Silk Stalkings” and a recurring role over a four-episode arc on “Saved by the Bell” from 1991-92, according to IMDb. He went on to invent the role of Austin Reed on “Days of Our Lives” from 1992-95, which he reprised in 2011 after a 16-year hiatus. During his first stint he won the Soap Opera Digest Award for Outstanding Male Newcomer in 1994.

A “Melrose Place” role as Richard Heart from 1992-95 followed after he left the daytime soap. He also famously played Zander Barcalow in the cult classic “Starship Troopers” in 1997.

The acclaimed actor was also a prolific producer. He had a number of projects in the hopper at his death, most notably the movie “Kockroach,” a New York City crime drama starring Chris Hemsworth alongside Zazie Beetz, Channing Tatum, Alec Baldwin and others, for which he was an executive producer.

Muldoon’s last social media post conveyed his enthusiasm for the movie, which is currently filming.

“So excited to be a part of this amazing project KOCKROACH directed by Matt Ross starring Chris Hemsworth, Taron (Egerton), (Zazie) Beetz And Alec Baldwin,” he wrote on Instagram. “Filming now in Australia.”

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