Suffolk police investigate a section of northbound Deer Park Avenue...

Suffolk police investigate a section of northbound Deer Park Avenue in Deer Park on Wednesday, Sept. 27, 2017, after a boy, 3, was hit by a landscaping truck. Credit: James Carbone

A 3-year-old Brentwood boy pulled away from his mother on the sidewalk and was struck by a commercial truck Wednesday in Deer Park, Suffolk police said.

Marco Hernandez-Pineda was in serious condition at Stony Brook University Hospital after being struck about noon on Deer Park Avenue, south of Grand Boulevard, police said.

He had run into the northbound lanes just as a Ford truck was going by in the right lane, police said.

The truck driver, Jose Flores, 39, of Bay Shore, stopped immediately, police said.

A passer-by drove the boy and his mother, Bessy Pineda, to a nearby medical office, where a Deer Park Fire Department ambulance took him to Good Samaritan Hospital Medical Center in West Islip, which transferred him to Stony Brook, police said.

Flores and his four passengers were not injured, police said.

The pickup truck, which belonged to masonry and asphalt contractor SLR Industries in West Babylon, was towing a trailer and headed to a job when the driver suddenly heard a thump, said company founder Louis Labriola, who went to the scene.

The driver had no idea a child had run out onto the street, the businessman said.

“The child didn’t run in front of the vehicle,” he said. “He went in between the rear of the truck and the trailer, and we believe he got struck by the spare tire on the trailer. My driver only knew because he heard the thump. He slammed on the brakes and thank God didn’t run the child over.”

The driver, along with his co-workers, jumped out and was “devastated” at what they saw, Labriola said. The truck driver, a father himself, was inconsolable, he said.

The businessman said he and his managers went to the hospital to show their support for the family, but did not meet with them.

“We’re praying for them,” he said. “That’s all we could do.”

Flores and his passengers were not injured, police said, and officers conducted a safety check on the truck. First Precinct detectives are investigating. Police did not release other details.

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