 Police and family members noted that the location of the vehicle, adjacent to two bridges over the Susquehanna River, bore some similarities to the location of the vehicle of Gricar's older brother Roy when he committed suicide in 1996.In the days following the discovery of Gricar's vehicle, authorities searched the river and its banks but found no sign of him.Police also noted that a sniffer dog's behaviour around where Gricar's car was found suggested that he might have gotten into another vehicle with someone else.