A 17-year-old girl was struck and killed by a box truck while walking in Randolph Thursday morning, authorities said.
The teenager, Tonnecia Long of Randolph, was walking at the corner of Route 28 and Route 139 when she was struck by the truck at about 10:10 a.m., said David Traub, a spokesman for Norfolk District Attorney Michael W. Morrissey’s office.
Long was taken to Signature Healthcare Brockton Hospital, where she was pronounced dead, said Traub.
The scene is also the corner of South Main and Union streets.
During a press conference Thursday afternoon, Police Chief William Pace said the truck was making a right turn onto Union Street.
“There are witnesses in the case,” said Pace. “We believe that she was struck by the rear of the vehicle.”
Long was a student at the B.B. Russell Alternative School in Brockton, a school with about 100 students, said Brockton School Superintendent Kathleen A. Smith.
“It is heartbreaking,” said Smith.
She said she met Long last fall at a bulletin board contest held through the Russell school.
Long’s bulletin board was “aesthetically beautiful,” Smith said. “It was all about caring and compassion for her classmates.”
They saw each other again Wednesday while Smith was back at the Russell school for a second bulletin board contest.
“She waited until I finished [speaking] to give me a big hug,” she said. “It just breaks my heart.”
Smith said she plans on meeting with students Friday morning.
“The staff is devastated,” she said. “It brings all of our schools together.”
The accident is under investigation by State and Randolph police and the district attorney’s office.
It was not clear Thursday night if Long was in the street or on the sidewalk when she was struck by the truck.
The driver, who has not been identified, was interviewed by Randolph police at the scene and no charges have been filed, Traub said.
Globe correspondent Jennifer Smith contributed to this report. Derek J. Anderson can be reached at derek.anderson