Two neighbours of Dellen Millard's mother tell a Hamilton court about a large trailer parked in her driveway in the days after Tim Bosma disappeared.

The two were the first witnesses called when the trial resumed on Tuesday for two men accused of killing the 32-year-old, who lived in the community of Ancaster.

Millard, 30, of Toronto, and Mark Smich, 28, of Oakville, Ont., have both pleaded not guilty to first-degree murder. 

There was no morning session of court today because a juror had a medical appointment. 

Later today, court is expected to hear testimony from an expert witness about exactly how cellphone records and tower locations helped police investigate Bosma's disappearance.

Bosma disappeared in 2013 after taking two men on a test drive of a truck he was trying to sell.

​​​Sgt. Stuart Oxley testified Monday that Millard was arrested at gunpoint on May 10, 2013, days after Bosma vanished. Hamilton police officers boxed in Millard's GMC Yukon at a stop sign on Cawthra Road in Mississauga, Ont.

"I approached the car myself with my gun drawn. He looked over at me and put his hands up," Oxley said. "I said, 'Are you Dellen Millard?' He said 'yes.'"

Follow CBC's Adam Carter's live coverage Tuesday. Court begins at 1 p.m. ET. On mobile? Can't see the timeline? View it here.

Live coverage of the trial begins at 1p.m.