Harvard University has been slapped with yet another lawsuit.

While many recent suits have revolved around the campus climate amid the Israel-Hamas war, this lawsuit is from a longtime Boston cop who claims he was discriminated against while he was with the Cambridge university’s police force.

Cohasset man Robert Harrington, 70, has filed a federal age discrimination lawsuit against Harvard University, the chief of the Harvard University Police Department, and an HR rep at the school.

The retired cop is seeking hundreds of thousands in damages from the university after the police department failed to promote him, allegedly due to his age, he claims.

“We allege that Mr. Harrington was not promoted to captain from lieutenant because of his age,” his lawyer Sarah Burger, of Burger Law Group PLLC, told the Herald.

“Given his qualifications including his well-rounded lengthy career in law enforcement, there is no other explanation,” Burger added. “We remain hopeful that we can achieve an amicable resolution of this matter.”

A Harvard spokesperson declined to comment on the pending litigation.

After more than 30 years with Boston Police and achieving the rank of superintendent, Harrington in 2013 was hired by the Harvard police force and was appointed lieutenant.

Then in 2018, he was assigned to the Criminal Investigation Division supervising detectives. A year later, Harrington was also assigned to supervise the Dignitary Protection Unit.

“Throughout his tenure with HUPD, Lieutenant Harrington has consistently received praise for his work performance, and salary bonuses more than the standard bonus plan amounts,” the lawsuit reads.

In 2021, the Harvard police force got a new police chief, Victor Clay.

Harrington met with Clay one time. Then, Clay reportedly canceled a meeting with the staff of the Criminal Investigative Unit.

“Lieutenant Harrington began to notice and experience negative treatment from Chief Clay,” the suit states.

Clay during a corridor conversation told Harrington that he was stripping the Dignitary Protection Unit from his command — with apparently no warning or explanation. Harrington had traveled multiple times with the university’s president on official trips, but he was no longer authorized for those protection responsibilities.

Then in November of 2021, Harrington was placed on administrative leave so the department could investigate his alleged involvement in a sick leave request by a subordinate officer. Harrington was out for a few months, until Clay in March told Harrington that he was cleared of any misconduct.

While he was out on administrative leave, the police chief announced that the department was being restructured — and that four new captain positions were being created.

Harrington said he met all the experience qualifications, so he applied for a captain position.

Meanwhile, Harvard HR contacted him as a witness about an age discrimination suit from a former deputy chief against Clay. Harrington provided “truthful, candid responses,” the lawsuit reads.

“Harrington conveyed that he felt Chief Clay was isolating older members of the Senior Staff and was unwilling to communicate with them on issues affecting their responsibilities,” the suit states.

Two days after Harrington returned from leave in March 2022, he interviewed for the captain role. A day later, Harrington was told that he was not getting the position.

“Lieutenant Harrington was passed over in favor of the four younger, less qualified, less experienced candidates,” according to the lawsuit.

“Harrington believes that in failing to promote him to Captain, Harvard and Chief Clay acted with discriminatory animus and bias against Harrington because of his age,” the suit states.

Harrington also claimed that he was retaliated against for cooperating with the age discrimination suit from the former deputy chief.

“Harrington suffered and continues to suffer lost wages, lost benefits, harm to his reputation, emotional distress,” the lawsuit reads.

Back in 2006, Harrington was appointed to superintendent in BPD by Superintendent-in-Chief Albert Goslin.

“Robert Harrington is a seasoned professional and brings a wealth of investigative experience to his position,” Goslin said at the time. “He has a proven track record as a leader and I am confident that as Superintendent, he will be a tremendous asset to the Boston Police Department and specifically Internal Investigations.”