The other three troopers were assigned to Troop C in Sidney, 65 miles west of Albany.
For the nearly 300 troopers and investigators at Troop C, the scandal has weighed heavily on morale.
All five investigators who worked in Troop C's identification unit between 1982 and 1992 have been implicated in the scandal.
Mr. Pilus was the first trooper outside Troop C to be charged.
All four officers belong to the identification unit of Troop C, based in Sidney, which covers seven upstate counties.
Troop C is the only Airborne unit within the 58th BfSB.
Troop C from Plainville recently left for Saudi Arabia, leaving behind one sergeant.
Both men are 17-year veterans of the force and joined Troop C in 1982.
Three state troopers from Troop C have been convicted of fabricating evidence over the last four years.
(organized and federally recognized 18 June 1921), redesignated Troop C 2 May 1922.