 Police in Concord are asking for the public's help finding perpetrators who have been stealing Kias and Hyundais around the capital city during the past two weeks or so. Yesterday, the Concord Regional Crime Line issued an alert about the stolen vehicle cases, eight in all, asking for tips. Sergeant Ben Mitchell of the Concord Police Department said the thefts are occurring during the overnight hours, specifically in the Heights and Pinnacook sections of the city.