Darby Mayor Joar Dahn hospitalized after hit-and-runDARBY, Pa. (WPVI) -- Philadelphia police are investigating a hit-and-run crash that injured a Delaware County mayor earlier this week. Joar Dahn, 29, said in a social media post that he was involved in a crash Tuesday night near La Salle University. According to Dahn, the collision happened at the intersection of Elkins and East Wister avenues. Dahn said another driver ran a stop sign, struck his vehicle and then fled the scene. The mayor said he did not suffer serious injuries but is experiencing pain following the crash.