WFAA-TV

GREENVILLE — A state trooper fatally shot the passenger of an 18-wheeler during a traffic stop Sunday, a spokeswoman for the Texas Department of Public Safety said.

The incident occurred about 10:30 p.m. along Interstate 30 just east of Greenville, said DPS spokeswoman Tela Mange.

The trooper had stopped the 18-wheeler and asked the driver whether there were any passengers in the vehicle. Mange said the driver was "evasive."

The trooper found a passenger, who approached him with a knife, and fired his weapon, she said.

Mange said the driver was taken into custody but it was unclear what criminal charges the driver may face.

WFAA-TV and DallasNews.com contributed to this report.