The search for a missing Lubec man has ended for the day, but the investigation continues. 30-Year-old Kristopher Fergerson disappeared last night. He was digging for periwinkles on a sand bar in Lubec narrows with his friend Dennis Knox. Knox told police the two became separated by rising waters and he could hear Fergerson calling for help. Knox notified customs in Lubec and the coast guard responded but they were unable to find Fergerson. Police say the state police criminal investigative division has been called in to assist.