Jonathan G. Salgado-Alvarez, 36, of 19 Sargent St.was phony.

Jonathan G. Salgado-Alvarez, 36, of 19 Sargent St. — was phony.When troopers tried to fingerprint him at the state police barracks in Leominster, they determined he had used sandpaper or some abrasive material to grind off the ridged skin of his fingerprints in an apparent attempt to conceal his identity.Salgado-Alvarez displayed a driver's license with a number that came back to a different person in Puerto Rico with a different name and date of birth than those listed on the license.
Police said they found 454 grams of cocaine hidden in a back seat compartment of a 2000 Buick Century that was registered to a man living at the Lawrence address. Salgado-Alvarez claimed the man was his roommate.Salgado-Alvarez was charged with trafficking cocaine, unlicensed operation, marked lanes violation, refusing to identify himself, and providing a false name to police. He was scheduled to be arraigned in Fitchburg District Court yesterday.State Trooper John McDonald stopped the Buick Century after watching it swerve between marked lanes on Route 2 westbound in Fitchburg just before Exit 30 late Tuesday afternoon.McDonald said he got suspicious while walking up to the car when he smelled an excessive amount of a masking agent used to cover up other odors.The trooper knew something was wrong when the driver handed him a bogus driver's license, could not immediately remember the name of the car's registered owner, and failed to give the full name of the girlfriend he claimed he was going to see. The trooper also notice a loosened dashboard and glove box.A state police dog detected narcotics in the man's car. After towing it to the state police barracks, state troopers and a Fitchburg police detective discovered a "hide" — an illegal alteration to a motor vehicle used to conceal and transport contraband — inside the passenger side rear seat.In the hide, police found two plastic bags, one a little bigger than a softball, the other slightly smaller. The bags contained a total of 125 small baggies containing what they said they believe is cocaine.