A helicopter was used in the search for a suspect in Southbury over the weekend,  Police say a vehicle was stopped on I-84 westbound near exit 14 on Saturday, but the driver and passenger fled over the guardrail toward Main Street South.  Police gave chase on foot and the driver was located hiding in the nearby woods.  That person was taken into custody, though not publicly identified by police.  A police K9 and a helicopter searched for the passenger yesterday.  Southbury Police say the suspect was not a danger to the public, though urged anyone who saw anyone suspicious or very disheveled in the area to contact police.