An American Airlines pilot was dragged from a plane in Kentucky and arrested this weekend for the 2015 triple homicide of three of his former neighbors, authorities said.

Former Army Ranger Major Christian Richard Martin, 51, was nabbed at the Louisville International Airport on Friday, on a plane loaded with passengers preparing for takeoff to Charlotte, ABC News reported.

The arrest came a day after his indictment by a Christian County grand jury on murder and arson charges stemming from the November 2015 killings of Calvin and Pamela Phillips and their neighbor, Edward Dansereau.

Police said Calvin Phillips, 59, was found shot to death in the cellar of his home in Pembroke, Ky. The bodies of Pamela Phillips, 58, and Dansereau, 63, were found inside her scorched car a few miles away in a cornfield.

Kentucky Attorney General Andy Beshear said his office took over the investigation after the couple’s son, Matt Phillips, met with him two years ago and said he was worried the cold case would never be solved.

“He was worried that the case was stalled and was worried that justice would not come,” Beshear said in a video statement released Saturday. “We hope this is one example of when you never stop seeking justice, when you never give up on a case that we can truly get important results for our families.”

Authorities haven’t given a motive for the slaying. At the time of the murders, Martin lived across the street from the victims.

In a 2016 interview with WSMV-TV in Louisville, Martin claimed that Calvin Phillips had been having an affair with his wife — but denied any involvement in the murders.

Shortly after the killings, Martin reportedly moved to North Carolina.

American Airlines said Martin has been a pilot for their subsidiary PSA Airlines since January 2018. His mugshot shows him in a pilot’s uniform.

Martin was held without bail in Jefferson County, Ky., and is expected to be extradited to Christian County and arraigned as early as Monday, officials said.