Native American activist Nathan Phillips, whose confrontation with a Kentucky high school student went viral last week, has a criminal record, including assault and escape from prison, according to a report.

The 64-year-old Omaha Nation elder was captured on video facing off against a group of students from Covington Catholic High School in Park Hills, Kentucky, at the Lincoln Memorial in Washington, DC.

When he was a teen and in his early 20s, Phillips was charged with escaping, assault and various alcohol-related crimes, according to the Washington Examiner, which cited news reports from his hometown of Lincoln, Nebraska.

He was charged as a 19-year-old “with escaping from the Nebraska Penal Complex where he was confined May 3,” according to a 1974 article in the Lincoln Star.

Later that year, Phillips pleaded guilty to assault and was fined $200. He also was charged with underage possession of alcohol in 1972, 1973 and 1975, as well as negligent driving, the Examiner reported.

In August 1973, a charge of destruction of property against him was dropped, but he was sentenced to a year of probation for a related charge of alcohol possession by a minor.

In December 1978, Phillips was charged with driving without a license.

Phillips also apparently misrepresented his service in the US Marines, according to the report.

In April, Vogue quoted him as saying: “You know, I’m from Vietnam times. I’m what they call a recon ranger. That was my role.”

Phillips actually spent most of his time in the Marines as a refrigerator technician after initially being an anti-tank missileman for four months, had not been deployed outside the US and never saw combat, according to the corps.

According to military records provided to the Examiner, Phillips served in the Marine Corps Reserve between 1972 and 1976 and held the rank of private on April 18, 1975.

And according to records obtained by former Navy SEAL Don Shipley, Phillips was listed as absent without leave three times, the news outlet reported.

Phillips, who has described himself as a “Vietnam times veteran,” told the Washington Post in 2000 that he had been “a Marine Corps infantryman,” without mentioning that he had been a refrigerator tech for most of his service.

He did not respond to questions from the Examiner about his military record discrepancies or his rap sheet.

Phillips stood toe to toe with Nick Sandmann, who was wearing a red “Make American Great Again” cap, moments after the 16-year-old and his classmates ran into several members of the Black Hebrew Israelites.

Phillips, who had just attended an Indigenous Peoples March, has said he approached the students to try to defuse the tension between them and members of the radical group.

Sandmann — whose family quickly hired the Louisville-based public relations firm RunSwitch PR — on Wednesday denied that he was “disrespectful” toward the elder after he was criticized online for appearing to smirk at Phillips.

He also told NBC’s “Today” show that he’d like a sitdown with Phillips, who has offered to visit the Kentucky school to lead a dialogue about cultural understanding.