A teenager who stopped to help after a car crash early Sunday morning on I-35 in Fort Worth was killed after he was struck by a suspected drunk driver.

It was 2:45 a.m. when Joshua Kaluzniak, 17, of Grandview, along with other passers-by stopped at the scene of a traffic accident where two southbound vehicles collided with an abandoned car near I-35 West and Rosedale Street.

According to Fort Worth police, Kaluzniak was on the shoulder of the interstate trying to wave passing vehicles out of the way when a black Lexus sedan struck one of the helpers’ parked cars, pushing it to Kaluzniak’s direction, tossing him over the guardrail onto Rosedale Street, which is below the overpass.

The good Samaritan was killed instantly. Police could not confirm whether another car struck Kaluzniak after falling from I-35 onto Rosedale Street.

The driver of the Lexus, identified as 43-year-old Roland Wilfred Directo Jr., was arrested on suspicion of DWI and faces charges of intoxication manslaughter.

There were no other reported injuries.