UPDATE: Truck driver dies after altercation with passenger leads to crash on Tucson's northwest side
The Pima County Sheriff's Department is investigating an incident involving a dead man near Marana.
Deputies responded to the incident Tuesday afternoon, in the 7800 block of West Dos Rotundo Drive just west of Interstate 10 near West Twin Peaks Road, the sheriff's department said in a news release.
Officials are asking people driving in the area to find alternate routes. No other information was available.
This story will be updated.
