Updated: May 26, 7:10 p.m.

Four men who allegedly attempted to tamper with telephones in the New Orleans office of Sen. Mary Landrieu (D-La.) pleaded guilty Wednesday to misdemeanor charges of entering federal property under false pretenses, The Associated Press reported.

The four were arrested Jan. 25 after they pretended to be telephone technicians in order to gain access to the telephone system in the Senator’s office.

Conservative filmmaker James O’Keefe was sentenced to three years of probation, a $1,500 fine and 100 hours of community service.

The three other men — Stan Dai, Joseph Basel and Robert Flanagan — were each sentenced to two years of probation, a $1,500 fine and 75 hours of community service.

O’Keefe is best known for dressing as a pimp and filming officials of the Association of Community Organizations for Reform Now giving him and a young woman dressed as a prostitute advice on how to avoid taxes for an underage prostitution ring.

A spokesman for Landrieu suggested the men use their community service time to help clean up the oil spill in the Gulf of Mexico.

“These four individuals now have criminal records, and while Sen. Landrieu hopes it will be a deterrent to any similar ploys, her focus is on the disaster in the Gulf of Mexico,” spokesman Robert Sawicki said. “Perhaps these four young men can put their community service requirement to good use by helping to clean up the oil that is endangering our already fragile coast.”