Authorities say a man arrested Friday for allegedly robbing a bank in Roseville is being investigated for four other bank robberies, including one in Lincoln. Scott Stewart Singewald, 41, was arraigned Tuesday in Placer Superior Court on suspicion of robbing the River City Bank in Roseville on June 11 and the Wells Fargo Bank in Lincoln on June 23. He pleaded not guilty to the charges. The FBI believes Singewald may be the person it dubbed as the “Stuffed Shirt Bandit” for a series of bank robberies that began Sept. 1 with the heist of a Bank of America in Fairfield. He was given that nickname because he stuffed money in his shirt after robberies, authorities said. Subsequent robberies attributed to the Stuffed Shirt Bandit occurred on May 3 at the Bank of the West in Woodland, June 20 at the Bank of the West on El Camino Avenue in Sacramento and June 23 at a Wells Fargo Bank in Lincoln, according to the FBI. A tipster who saw a photo of the wanted man reportedly gave Roseville police a description of Singewald’s car, and officers found it parked Friday morning at Extended Stay America, a hotel on Lead Hill Boulevard. “Apparently, he had been staying there for a while,” said Roseville Police spokeswoman Dee Dee Gunther. The suspect was later arrested when he came outside. The series of robberies is being investigated by the Sacramento Violent Crimes Task Force, which is composed of FBI agents and detectives from Sacramento-area law enforcement agencies. According to Placer County District Attorney spokesman Scott Owens, Singewald was convicted for a prior bank robbery in a U.S. Federal Court in 1994. He is being held in the Placer County jail in Auburn on $750,000 bail.