A routine probation check by detectives in the Fullerton Police Department’s Directed Enforcement Unit led to the discovery of $2,000 in counterfeit bills. While the probationer wasn’t in the house at the time of the surprise visit, two males and a female were, said Det. Mike Greene, lead investigator on the case. One of those men was Gerald Allen Neel, 51, who also happened to be on probation. When searching the house, detectives discovered items used to manufacture counterfeit bills, Greene said, including a printer used to print the bills and liquid used to wash the bills. Greene then searched…