SAINT JOHN – David L. Logan changed his plea to guilty of sexually assaulting a 14-year-old girl in 2006. Logan, 64, of Pleasant City Street, sat with his head down and arms crossed as Crown prosecutor John Henheffer described the assaults, which occurred between July 1 and Nov. 30, 2006. The assaults actually stopped in August, even though the charge covers until the end of November, he added. Logan, who is married, has no previous criminal record. Two other charges against him were withdrawn after he changed his plea, including a second count of sexual assault and sexual exploitation.