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Waltham man riding bike for charity is struck, killed by truck in Maine

A 23-year-old Waltham man was struck and killed in Maine Friday morning while riding his bicycle with co-workers as part of the American Lung Association’s Trek Across Maine 180-mile bike tour, Maine State Police said.

Police said David LeClair was cycling along Route 2 in Hanover just before 9 a.m. with a group of other employees from Athenahealth Inc. of Watertown when the rear of a tractor-trailer hit LeClair, killing him instantly.

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The truck did not stop, police said in a statement, although it was unclear if the driver knew his vehicle had struck LeClair.

LeClair’s companions called police with a description of the truck, and police stopped a driver operating a truck matching the description a short time later in nearby Rumford. Police said they were interviewing the driver Friday and examining the vehicle.

Few other details were released because the investigation was ongoing, police said.

The three-day bicycle tour began Friday at 7 a.m. near Sunday River mountain in Newry, a short distance from where the fatal accident occurred. The bike tour ends in Belfast.

Jeff Seyler, American Lung Association chief executive and president, said the bicycle tour would continue, despite the fatal accident.

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“All of us at the American Lung Association express our profound sadness at this tragic loss of life and offer our deepest condolences to the family,” Seyler said in a statement. “With heavy hearts, the Trek is continuing.”

LeClair was biking as part of the 140-person Athenahealth team. LeClair has worked at the medical billing company for two years, officials said.

Holly Spring, spokeswoman for the firm, said LeClair, a native of Naples, Fla., joined the company after he graduated from Bentley University in Waltham.

Bentley spokeswoman Helen Henrichs said that LeClair was an honors student while in college and that his younger sister is a senior at Bentley.

This was LeClair’s second time biking in the Trek Across Maine, Spring said in an e-mail, adding that LeClair “was very much looking forward [to] and excited about the Trek.”

“We’re heartbroken,” Spring said. “David LeClair was a bright light at Athenahealth. He was loved by all. Known to be incredibly social, he loved the outdoors and was a friend, beyond just a co-worker.”

Spring said LeClair’s job was working as a liaison between doctors and physician practices and insurers.

The company has called grief counselors to Watertown and Maine, and officials are planning to hold a memorial event for LeClair, Spring said.

“The entire Athenahealth community is deeply saddened by what can only be described as a terrible and shocking accident,” she said. “Our deepest sympathies go out to David’s family and loved ones as we all mourn together.”

Athenahealth also has an operational site in Belfast, the ending site of the Trek Across Maine, according to the company’s website.

Jaclyn Reiss can be reached at jaclyn.reiss@globe.com.

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