LANCASTER â€“ Two Lancaster County men were arrested in connection with a multi-month drug investigation after citizens reported suspected illegal activity. The Lancaster City Police Selective Enforcement Unit executed a search warrant Thursday at an apartment in the 400 block of Manor Street and discovered heroin, cash, firearms, ammunition, and packaging materials. Police charged 28-year-old James Rosario of Lancaster with possession with intent to deliver heroin, possession of drug paraphernalia, and a prohibited offensive weapon. They also charged Christopher Guido of Washington Boro with possession with intent to deliver heroin and possession of drug paraphernalia. Guido also had a Lancaster County bench warrant for a probation violation as well as a criminal warrant for theft by unlawful taking. The two are being held for arraignment. The investigation into this case is continuing.