Hamilton police have identified Berkley James Wood as the pedestrian killed in a collision with a motorcycle as he crossed a Mountain street with his mother Saturday.

Police say drivers nearly struck Wood, his mother and the motorcyclist as they lay injured or dying in the road.

Wood, a 68-year-old Hamilton man, and his mother, who is 89, were crossing Mohawk Road East near Upper Gage Avenue at 5 p.m. when they were hit by a motorcycle, according to police.

Police said the pair — both of whom use walkers — were leaving the Food Basics parking lot to head to their nearby home.

Wood was pronounced dead in hospital. His mother remains in hospital in critical condition.

Police say the 54-year-old motorcyclist, who is from Hamilton, is in hospital in critical condition but is stable.

Det. Const. Jaimi Bannon of the Hamilton police collision reconstruction unit said surveillance footage from homes in the area shows drivers continuing through the collision scene before police arrived, "almost running over the pedestrians again."

The injured people lay across three different lanes in the five-lane road, Bannon said.

Good Samaritans eventually stood near the injured people to ensure they wouldn't get hit again, she said.

She praised the Good Samaritan bystanders for their actions.

Even after police arrived though, a vehicle "barrelled through" the scene, nearly striking an officer, she said.

"It's frustrating," Bannon said Sunday, noting similar incidents have happened at other collision scenes recently. "If you see a collision, stop. Do not drive through the collision scene, especially if someone's hurt."

Police said people also took evidence from the scene, including a walker, groceries, scratch tickets and personal effects.

The majority of the items were eventually returned to police, including a walker Bannon believes a neighbour took to ensure it wouldn't get stolen.

Wood and his mother were not crossing at a crosswalk but at a part of the sidewalk where the edge dipped down, allowing them to move walkers onto the road, Bannon said.

She said they were well into the roadway by the time they were struck, Bannon said. His mother was wearing a white bonnet and jacket, she said.

The son and mother lived together and Wood took care of his mother, she said.

Bannon said it's imperative people don't take evidence from the scene — or drive over it, as also happened in this case — as it helps her investigate what happened.

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Where a purse lands, for instance, can help police establish the speed a driver was travelling when a victim was hit.

"Every piece of debris that travels tells a story," Bannon said. "I have three seriously injured patients (including Wood, who later died) who can't tell me what happened."

Without key evidence, it's difficult for police to investigate.

"Its frustrating for victims' families who want the best from us," she said.

At this point, police have not laid any charges.

Police have not ruled out speed or impairment as factors in the collision.

Anyone who took items from the scene is asked to hand them over to police.

Anyone who saw the collision but has not yet spoken to police, or anyone who has video footage, is asked to contact the collision reconstruction unit at 905-546-4753 or 905-546-4755.

To provide information anonymously, call Crime Stoppers at 1-800-222-8477 or submit tips online at http://www.crimestoppershamilton.com

katrinaclarke@thespec.com

905-526-4629 | @katrinaaclarke