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“Ghost Adventures” star Mark Constantino killed his co-star wife, her roommate and then himself after suffering from years of physical abuse at the hands of his petite spouse, authorities told The Post Tuesday.

The Constantinos had a long history of domestic violence including 10 incidents in the past three years, with Debra acting as the primary aggressor in a majority of the incidents, according a police source.

Debra was first arrested in July 2012 for domestic battery, after a booze-fueled fight with her husband and daughter.

Debra attempted to kick her daughter out of the house and violently pushed her husband when he interceded, according to police sources.

Then, in March 2015, the heavily made-up ghost hunter was busted again for domestic battery, but this time she used a grapefruit knife on her husband, whom she seemed in love with on the popular Travel Channel show, sources said.

The fiery redhead drunkenly slashed Mark’s forearm during a heated argument over their finances in their kitchen, authorities said.

A concerned neighbor called 911 after hearing loud screams coming from the home of the kooky couple, who are known for their theatrical conversation with the dead.

Mark later told police that he did not report the attack because this is “everyday behavior” by his wife, sources said.

And just last month, Debra filed for divorce after she claimed that Mark and their 23-year-old daughter ripped her out of a car, and then beat and strangled her, sources said.

The reality stars were recurring characters on the show, which launched in 2008, and were considered experts in Electronic Voice Phenomenon, also known as EVPs.

The bodies of the paranormal investigators were found with gunshot wounds Tuesday afternoon inside their daughter’s apartment in Sparks, Nevada. Debra’s roommate, James Anderson, 55, was also found dead from a gunshot wound to his head in their Reno apartment earlier that day.

Cops initially responded to Debra’s Reno residence on Escalera Court after receiving a 911 call at 6:30 a.m. from an acquaintance.

Inside the home, police found Anderson’s body, and the acquaintance reported that Debra, 52, was missing.

Then cops traced the cellphones of Debra and Mark to their daughter’s home in Courtside Gardens Apartments in Sparks, sources said.

When they arrived, police immediately heard gunshots and a man’s voice from inside the home screaming that “this is a hostage situation” and ordering them to “back off,” a source said.

Investigators eventually made contact with Mark, 53, but were unable to convince him to surrender, sources said.

After more than two hours of tense negotiations, the SWAT team heard a gunshot from inside the apartment and then abruptly used explosives to gain entry, sources said.

They discovered the couple dead in an apparent murder-suicide, police said.