LAS CRUCES - Alcohol -- not speed -- contributed to a four-vehicle crash Friday night that killed two Las Cruces men, according to New Mexico State Police.

Ruben Espinoza Jr., 28, of Alamogordo was headed west on U.S. 70 just after 8:30 p.m. when he appears to have made an improper lane change near mile post 154, state police Capt. Rich Libicer said.

Espinoza's 2004 Chrysler sedan smashed into another westbound vehicle, a black 2004 GMC pickup driven by 30-year-old Robert Walters Jr., one of the men charged in the 2002 Baby Brianna case.

"They became tangled up and went across the median," Libicer said.

The GMC pickup was torn in half and flipped over by an eastbound tractor-trailer, which also hit the Chrysler sedan. The pickup was then struck by another eastbound vehicle, a red 2002 Ford pickup driven by 42-year-old Manuel Campos of Las Cruces, whose 10-year-old grandson, Isaiah Campos, was riding in the back seat. Manuel Campos was killed at the scene. Walters, who was convicted of failing to report child abuse after his 5-month-old niece, Brianna, was brutally abused to death by other relatives, also died instantly.

The boy and Espinoza, who received severe injuries and remains in critical condition, were transported by helicopter to University Medical Center in El Paso.

The driver of the 2005 Volvo tractor-trailer, 55-year-old David Hayes of Independence, Mo., was treated at Memorial Medical Center for minor injuries. Hayes and Isaiah Campos were both listed in stable condition Saturday.

Mayfield High School Assistant Principal Jeff Brilliant, his wife and children were in their backyard a mile away when they heard the impact.

"It didn't sound like a wreck. It sounded like an explosion," Brilliant said. "And not a firecracker explosion, we're talking like a bomb explosion is what it sounded like to me."

State police Sgt. Ron Taylor described the damage to the two pickups as "about the most destructive I've seen."

"There was debris scattered for a long way on both sides of the road," he said. "One of the wheels of one of the vehicles was out in a field north of U.S. 70."

Results of a blood test are pending for Espinoza, who does not face criminal charges yet in the crash.

Investigators "could smell the odor of alcohol in the car and on (Espinoza's) person at the hospital," Taylor said. "A strong odor. Someone told me there was at least one (beer) can in his car, but it could have been punctured by the wreck."

Espinoza's criminal history includes multiple traffic offenses, including a conviction for reckless driving, a conviction for driving with a suspended license and two convictions for failing to use seat belts, according to court records. He also was convicted of battery against a household member and disorderly conduct in 2003 and for marijuana possession in 2002.

And in 2006, Espinoza was arrested by state police and arrested on charges including drunken driving - with a .07 blood-alcohol content, slightly less than the legal limit. Those charges were dismissed in 2008.

The investigation is ongoing into Friday's wreck.

"There are (no charges) at this time - there are some results we have to wait on," Libicer said. "We'll wait on the results of blood tests and go from there."

The crash scene is being reconstructed with the assistance of the Las Cruces Police Department.

"We're dealing with so many vehicles, so much evidence at the scene - we want to make sure we're getting it right," Libicer said.

Highway traffic on U.S. 70 between Sonoma Ranch Boulevard and Mesa was detoured on frontage roads until 5:30 a.m. for westbound traffic and 7 a.m. for eastbound traffic