In the frenzied push before the Christmas holiday, Nathan D. Burk was in his UPS delivery truck on Route 8 in Watertown late Tuesday, when police say his co-worker, Elijah Bertrand, attacked and killed the Waterbury man.
What motivated the killing was not disclosed by authorities, who searched for nearly 15 hours for 19-year-old Bertrand after Burk was found with grave injuries after what was first reported as a motor vehicle crash involving a UPS truck.
Burk, 28, was rushed to a local hospital, but died some time later, state police said. Bertrand, was found about 2 p.