An investigation into alleged mishandling of drug evidence by the Fall River Police Department has ended with recommendations for no action to be taken. The investigation, which lasted nearly a year, examined accusations that narcotics were given to an informant and that years-worth of drug records were unaccounted for. While prosecutor William Connolly and retired state police lieutenant Kevin O’Neil found evidence that Del. Joshua Robillard violated department policy, they concluded that his behaviour did not warrant criminal action. The investigation also examined missing logbooks detailing undercover purchases of illegal drugs, but the report failed to identify who was responsible or whether the event was an accident or deliberate theft. The probe is just one of many controversies that have besieged the Fall River Police Department in recent years.