GOLDEN, Colo. (AP) – A Colorado prosecutor says a 23-year-old truck driver is accused of “exhibiting extreme indifference to the value of human life” in a fiery interstate crash that killed four people and injured others.

(credit: CBS)

Jefferson County District Attorney Pete Weir announced Friday a total of 40 charges, including 36 felonies, against Rogel Lazaro Aguilera-Mederos of Houston.

READ MORE: Colorado Weather: Winter Weather Advisory For The Front Range

The charges against Aguilera-Mederos include four counts of vehicular homicide, six counts of first-degree assault and 24 counts of attempted first-degree assault.

Rogel Lazaro Aguilera-Mederos (credit: CBS)

The crash occurred April 25 on Interstate 70 just after it descends from the mountains west of Denver. The pileup involved 28 vehicles and multiple explosions.

READ MORE: Mauricio Anchondo-Olivas Sentenced To Life In Prison For Murder Of Former Roommate

Aguilera-Mederos, who is being held on $400,000 bond, told investigators the brakes on his semitrailer failed.

His lawyer calls the charges “prosecutorial overkill.”

MORE NEWS: PHOTOS: Cheesman Park Homes & Governor's Mansion Vandalized With Spray Paint

(© Copyright 2019 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.)