Arlington -- A 43-year-old Aledo man was killed Sunday in a one-vehicle crash on Interstate 20 near Collins Street.
Alan Houk was traveling westbound in the 3800 block of I-20 in his 2007 Chevrolet Suburban shortly before 10 p.m. when he lost control of his SUV, according to Arlington police.
The SUV struck and guardrail and center concrete barrier. Houk, who was not wearing a seat belt, was thrown out of his SUV, according to police.
Police on Monday said they don't know what caused Houk to lose control and were trying to determine if drugs or alcohol were involved.