Solah was pronounced dead at Beth Israel Deaconess Medical Center. Officials did not identify his hometown.

Saadin Solah, 53, was riding his bicycle in "an organized ride" when he collided with a GMC pickup truck around 9 a.m. on Hudson Road, also known as Route 27, according to Middlesex District Attorney Marian T. Ryan's office.

Tragedy struck an annual triathlon in Sudbury Sunday morning when a cyclist in the race was killed after being hit by a pickup truck, officials said.

In a statement, organizers of the 26th Sudbury Sprint Triathlon said "one of the competitors was struck and killed by a vehicle during the cycling portion of the race. . . . Our thoughts and prayers are with this athlete and the athlete's family and friends, as well as with the first responders and all others during this time of tragedy."


A spokeswoman for Ryan declined to say if Hudson Road had been closed to vehicular traffic at the time of the crash. Sudbury police referred questions to Ryan's office.

"This is a tragic situation involving the death of a cyclist on the roadway," Sudbury Police Chief Scott Nix said in a statement. "On behalf of the entire community, I want to extend my thoughts and prayers to the victim's family."

Ryan's office said the driver of the truck, whom authorities did not identify, pulled over and waited for rescuers to arrive. No charges had been brought as of Sunday evening.

Former US senator Scott Brown, who participated in the triathlon, offered condolences on Twitter after finishing the event.

"Terrible head-on collision," Brown tweeted. "Prayers are with the racer and his family."

According to the website of Fiske Independent Race Management, which organized the triathlon, the race consisted of a 400-yard swim at a local pool, a 3.5-mile bike route, and a 2.1-mile run.


Just finished the triathlon in Sudbury mass. Terrible head on collision. Prayers are with the racer and his family. — Scott P. Brown (@SenScottBrown) May 17, 2015

Globe correspondent Rebecca Fiore contributed to this report. Travis Andersen can be reached at tandersen@globe.com. Follow him on Twitter @TAGlobe.