The trial of two men accused of killing Tim Bosma continued Monday in a Hamilton courtroom.

Dellen Millard of Toronto, and Mark Smich of Oakville, have pleaded not guilty to first-degree murder in Bosma's death.

Bosma's family members winced and looked away as a police officer testified last week about a bullet casing and blood she found inside the Hamilton man's pickup truck.

Court has also heard from a cellphone expert who described the movements of phones registered to Millard and Smich in the hours and days following Bosma's disappearance.