Officer who since has resigned ticketed for alleged assault while working off-duty Benjamin D. Rieker resigned Jan. 26 for policy violations, acting Police Chief Brian Jackson said. Rieker, 32, had gone through the Lincoln Police Department’s Recruit Academy and been an officer for about a year and a half. Jackson said the investigation stemmed from a disturbance and possible excessive use of control. Then-Chief Jeff Bliemeister learned of the allegation Nov. 12 and ordered an investigation by the department’s internal affairs unit. “The investigation revealed department policy violations as well as a potential criminal offense,” Jackson said at a news conference Wednesday.