Washington-based federal prosecutors are planning to charge NYPD cop Daniel Pantaleo with civil rights violations in the 2014 death of Eric Garner on Staten Island, a law enforcement source told The Post on Tuesday.

“It’s going to happen sooner than later,” the source said. “Washington wants to indict [Pantaleo],” who was accused of putting Garner in a fatal chokehold banned by the police department.

Attorney General Loretta Lynch approved the plan after federal investigators in Brooklyn were replaced by their D.C. counterparts because they didn’t want to bring charges in the case, the source said.

Local federal investigators who worked on the case are privately seething. They accused their Beltway colleagues of only trying to “make an example out of Pantaleo” at any cost, said one source familiar with the case.

“We already investigated this case over a long period and came to a conclusion which they didn’t like. It’s truly disgraceful what they’re doing,” the source said.

The Patrolmen’s Benevolent Association also blasted the Justice Department for going on a “fishing expedition” after two investigations, including one by state prosecutors that ended with a grand jury declining to indict Pantaleo.

“Now, it appears that they are taking a third bite at the apple in an effort to reach a predetermined outcome,” PBA President Patrick Lynch said in a statement.