A police car was smeared with excrement in front of a Police Athletic League building on East 12th Street in Greenwich Village. View Full Caption DNAinfo/Ben Fractenberg

MANHATTAN — Call it a case of NYPD poo.

Human excrement has been smeared on the door handles of several police cars parked outside an NYPD facility in Greenwich Village, sources told “On The Inside.”

The scatological crime scene was discovered earlier this week when Community Affairs officers went to their cars outside an NYPD outpost at 34 1/2 E. 12th St., off University Place, and were met with the disgusting mess.

Police officials suspect that the excrement may be the handiwork of a few young homeless people who had been camping out overnight beneath scaffolding outside the building.

Community Affairs officers recently shooed them away and they may have left their mark in protest, a source said.

“They were near the police facility, camped out, first just in sleeping bags, and they would leave in the morning,” source said.

“But then it was more a tent city and I guess it was too much and they were staying too long and they were told to move by Community Affairs.”

The source added, however, that there might be another culprit.

The source explained that there has been some criticism from residents that Community Affairs officials take up too many parking spots on the street, painting lines for their vehicles and often placing wooden barricades in spaces to keep others from using them.

“It could be a local person,” the sources said. “No one knows."

Regardless, the patrol cars were driven to a local car wash where the evidence was washed away, the source said.

Sources say no arrests or summonses are expected.