SOMERSET (AP) - A Pennsylvania man set up a fake drunken-driving checkpoint only to be charged with drunken driving himself when real troopers arrived to investigate.

The (Somerset) Daily American says 20-year-old Logan Shaulis will be sentenced June 27. He pleaded guilty Thursday to drunken driving, possessing instruments of crime, and impersonating a public servant.Police say Shaulis used a flashing blue light bar, parked diagonally across state Route 601 and set up road flares about 4 a.m. May 30.A motorist who stopped says Shaulis claimed he was a trooper with the "drug and alcohol division" and demanded to see her identification.When police arrived, Shaulis tried to hand a BB pistol to the car's passenger, saying he couldn't get caught with it.Shaulis' attorney says Shaulis has since completed substance abuse treatment.