A 28-year-old man was killed when the truck he was driving north on Interstate 19 left the road, rolled and struck a tree, authorities said.
The crash, south of San Xavier Road, was reported about 1:30 p.m. Monday, said Officer Raul Molina, a Department of Public Safety spokesman.
The victim was a Tucson man. His name hasn't been released, pending notification of his family.
Officials do not know why the truck exited the roadway from the right side, Molina said. The victim was alone in the truck.