PORT JERVIS — A contingent of law enforcement agencies announced Friday the arrest of seven people after an investigation into sales of heroin and crack-cocaine in the City of Port Jervis and the Town of Deerpark.During the arrest of Keime Porter, 20, of Patterson, New Jersey, on Feb. 19, police found 300 bags of heroin and five grams of crack-cocaine, according to a news release from Port Jervis police.On Feb.