The driver of a tractor-trailer rig that veered across a median into oncoming traffic, killing 10 people in two vehicles, was being held on charges of criminally negligent homicide.

The crash occurred during afternoon rush hour Monday on U.S. 75 just south of Sherman.

Three children and their mother and grandmother were killed in an SUV that was burned beyond recognition, Sherman fire Capt. Doug Blackburn said. Five others were killed in a pickup truck, and two adults were injured.

The tractor-trailer's driver, Miroslav Janusz Jozwiak (search), 45, was also injured.

Jozwiak was being held Tuesday on 10 counts of criminally negligent homicide (search), but no formal charges had been filed because authorities were waiting for a Polish interpreter, said Sherman Justice of the Peace Greg Middents.

The SUV was crushed and its license plate and vehicle identification number were destroyed in the fire. Authorities were unable to identify its occupants until a man, who lives in McKinney, came to the scene saying his family hadn't returned home that evening, the Sherman-Denison Herald Democrat reported in its Tuesday editions.

"The tractor-trailer rig and the SUV caught fire. It's really hard to tell one from the other," Sherman police Capt. Otis Henry said.

The pileup, which occurred about 60 miles north of Dallas, closed down a section of the highway's southbound lanes. The highway was reopened early Tuesday.