Kevin Grant, 29, was arrested April 27 in Norwich on charges of violating the conditions of his release from custody, perhaps because he was in possession of marijuana. Darien police say he went into a rehabilitation program, got out and recently was staying at his former home in Darien. A condition for his staying at home at Shady Lane was that no narcotics were brought in, but on May 26, a complainant told police that when she was cleaning she’d found bags that she suspected had heroin residue in them. Police confirmed that. She also found $750 in forged checks, police said.