A Fairfield man lost his wallet early this morning but police returned it. The bad news for 37-year-old Charles Lewis is that police say he lost his wallet during a struggle with a man he assaulted and robbed on Pennsylvania Avenue around 2:30 a.m. Thursday. Lewis allegedly demanded money and property from a man who was walking through the parking lot of an apartment complex in the 200 block of Pennsylvania Avenue, Cpl. Kathryn Scarrott said. The two men struggled and Lewis struck the victim in the head with a gun and fled in a vehicle, Scarrott said. During the struggle, Lewis apparently lost his wallet containing his California identification card, Scarrott said. The victim gave the information to police who used it to locate records that gave a possibleaddress of the suspect, Scarrott said. Within eight minutes, police set up a perimeter around a home in the 1300 block of James Street where the suspect supposedly lives. Police tried for an hour to contact the residents of the home, using an armored rescue vehicle and a public address system to get theresidents to eventually come out, Scarrott said. Lewis was detained and the victim and a witness identified him as the robbery and assault suspect, Scarrott said. Police then searched the house and found two handguns, the victim’s stolen property and a small amount of a controlled substance, Scarrott said. Lewis was booked into the Solano County jail for robbery, assault with a deadly weapon and weapons charges.