SMITHERS, W.Va. -- Police have dropped robbery charges against a former Glasgow police officer after he was arrested for his alleged involvement in a home invasion.State Police Sgt. Michael Baylous said Thursday that charges against Donald Scott Wills, 44, of Smithers, were dropped until investigating troopers can file charges that "accurately reflect his level of involvement in this crime."Two other man have been charged for their alleged involvement. Baylous said State Police Cpl. M.A. Elswick and Sgt. K.E. Tawes, of the Gauley Bridge Detachment, discovered that Don Naylor, 48, and Michael Scarbro, 29, both of Smithers, were involved in the invasion.Naylor and Scarbro each face charges of first-degree robbery and conspiracy to commit a felony. They were arraigned Thursday in Fayette County Magistrate Court and ordered held in Southern Regional Jail.The troopers are still looking into Wills' involvement, Baylous said.Police say two men posing as State Police troopers went to home along Michigan Avenue in Smithers Tuesday night and asked the homeowners if they could come inside.The two men then ordered the homeowners to the ground and tied them up then began looking for drugs and cash, police said. Eventually police were notified of the invasion and the two men fled before officers arrived.The homeowners were not injured and the men did not take anything, police said.Witnesses reported to police the suspects wore State Police jackets and flashed fake badges. Baylous said the suspects identified themselves as law enforcement officers and the State Police is not missing uniforms or jackets. None of those items was found during the investigation, he said.Wills is a former Glasgow officer who was fired in April after Fayette County deputies said he purchased narcotics from an informant. He was charged with possession of a controlled substance and has been indicted by a Fayette County grand jury.