Twelve people were injured on Thursday morning, November 12, 2026, when nine vehicles — including a commercial vehicle — collided on eastbound Interstate 10 in Marana, Arizona, just west of Twin Peaks Road, the Arizona Department of Public Safety reported. The crash happened shortly before 8 a.m. near milepost 244.3, in the middle of the morning drive on the main highway linking the Tucson area with Phoenix.
Source: AccidentNews, reporting Arizona DPS
KOLD 13 News in Tucson reported the same toll in its Thursday coverage — twelve people hurt after the nine-vehicle crash on I-10 in Marana — confirming the scale of the pileup from a second newsroom. No deaths were reported in either account.
Source: KOLD 13 News
What the Department of Public Safety says happened
According to the Department of Public Safety account, the nine vehicles collided on the eastbound side of I-10 west of Twin Peaks Road shortly before 8 a.m. Two of the twelve injured people were taken to a hospital, and one of them had serious injuries. Several vehicles were towed from the scene. Beyond those confirmed points, investigators have not published a full sequence of how the vehicles came together, and the early reports do not name any of the injured.
One action has already been taken at the scene level: the commercial vehicle driver was cited for failure to control the vehicle to avoid a collision, police said. A citation is an allegation recorded by officers, not a court's finding, and the wider crash investigation is still open.
The Arizona Department of Transportation said the left eastbound lane of I-10 was blocked while crews worked at the scene near milepost 244.3. Drivers on the Tucson–Phoenix corridor faced a blocked lane at the crash site while several vehicles were towed away.
A trucking corridor, at the busiest hour
Interstate 10 through Marana is not a quiet local road. It is the principal east–west freeway across southern Arizona, carrying long-haul trucks between Tucson, Phoenix and the routes onward to New Mexico and California, mixed with fast-growing commuter traffic from Marana and the northwest side of the Tucson metro. A nine-vehicle pileup involving a commercial vehicle, shortly before 8 a.m., lands exactly when that freight and commuter mix is at its densest — which is why this corridor matters to Punjabi truckers who run I-10 as part of cross-country freight work.
Marana sits in the desert northwest of Tucson, where Twin Peaks Road serves new housing, schools and shopping on the town's growing edge. The crash site, just west of the Twin Peaks interchange, is a stretch where local traffic entering and leaving the freeway mixes with through trucks travelling at highway speed — the setting, though not an official finding about this crash's cause.
What is still unknown, and what happens next
The Department of Public Safety investigation remains open. Police said they are still collecting information and have not drawn final conclusions — so the reports do not yet say what set off the chain of collisions, whether speed, following distance, a lane change or a mechanical problem played any part, or whether any further citations or charges will follow the one citation already reported.
For the twelve injured, the next steps run through hospitals, insurers and the official crash record rather than Thursday's headlines: two people were taken for hospital treatment, one seriously, and several drivers are dealing with towed vehicles. Anyone who was in the crash area near milepost 244.3 shortly before 8 a.m. and saw how it began is the kind of witness investigators typically still need while a multi-vehicle file like this stays open.