The off-duty officer killed while bike riding Tuesday has been identified as 26-year-old Allen D. Johnson.
Johnson was hired by the Tucson Police Department in September 2005 and was last assigned as a patrol officer in the Downtown division.
He was riding east on Old Spanish Trail near Camino Loma Alta when he was struck from behind by a full-sized red Dodge pickup truck, said Deputy Dawn Barkman, a Pima County Sheriff's Department spokeswoman..
The driver of the truck remained at the scene and called 911, but when deputies arrived, Johnson was already dead.
No citations have been issued as the investigation is ongoing.
“This is a tragic loss to the Department,” said Sgt. Mark Robinson, a Tucson Police Department spokesman. “All traffic fatalities affect us in one way or another, but when someone we know and work with is involved, it cuts deeper.”