A 43-year-old man was killed Sunday night in Pueblo County when his van rolled after hitting an elk in the southbound lanes of Interstate 25.

Ronnie Trujillo, of Pueblo, was not wearing a seatbelt, the Colorado State Patrol said in a news release.

The State Patrol says Trujillo was about 16 miles south of Pueblo in a 2013 Ford E-250 when he collided with an elk crossing the interstate.

“After impact with the elk, the Ford went off the left side of the road,” the release said. “The Ford then rolled 1.5 times, coming to rest on its roof facing west. The elk came to rest in the right hand lane of traffic.”

Investigators say they suspect excessive speed contributed to the crash.

Alcohol and drugs are not considered factors in the crash.

Jesse Paul: 303-954-1733, jpaul@denverpost.com or twitter.com/JesseAPaul