Vermont State Police are asking the public’s help in locating the owner of a silver Toyota pickup truck that was passing through an area of Rockingham where a delivery driver was shot to death November 1.

Police say occupants of the truck, believed to be a 2016 or Toyota Tacoma SR5, may have witnessed the shooting of Roberto Fonseca-Rivera, 44, who was found dead inside a delivery truck pulled to the side of southbound Route 103 between Lower Bartonsville and Williams roads.

Police say he died from a gunshot wound of the head and neck. The death has been ruled a homicide.

Fonseca-Rivera of Boston worked for Katsiroubas Produce of Hyde Park, Massachusetts. Police said he was in Vermont in a company vehicle making deliveries.

Last Friday, Vermont State Police detectives conducted a detail in the area, talking to drivers who may have been passing through around the time of alleged shooting.

The investigation is ongoing and state police ask anyone with information to call the Westminster Barracks at (802) 722-4600.