DENVER -- Police arrested two men early Saturday morning accused of driving their pickup through a downtown intersection, running down a mother and father and their two children, killing three members of the family.

The parents were walking their two children in a stroller in downtown Denver Friday night, crossing at a crosswalk at 15th and Arapahoe streets, witnesses told police.

The mother and two children died of their injuries and the father was hospitalized in fair condition at Denver Health Medical Center, said Sonny Jackson, Denver police spokesman. The family was crossing at the lighted intersection near the Denver Center for the Performing Arts.

"I went down there and it was a well-lit street. There was no excuse for it. It is one of the most horrific accidents we've had," said Jackson.

The truck ran through a red light at high speed, killing Becca Bingham, 39, and her two children, 4-year-old Macie and 2-year-old Garrison. Macie and Garrison were sitting side-by-side in the double stroller as their parents pushed them through downtown Denver.

"I saw a green light and the family walking across on the green. They had the right of way, and a truck coming from nowhere, and I couldn't tell what side of the street. It was really fast and it hit this family," Alice Maynard said. "He didn't even brake."

Maynard said the truck appeared to be going about 50 mph.

Witnesses described the truck as a red Ford pickup with a white stripe and police found a front license plate in the intersection knocked off from the collision.

Police traced the license plate to an address in neighboring Westminster and two men were arrested. Lawrence Trujillo, 36, was charged with three counts of vehicular homicide involving driving under the influence, three counts of leaving the scene of an accident and other charges. Eric Phil Snell, 35, was arrested on three counts of investigation of accessory to a crime, police said Saturday.

Police also recovered a vehicle they say the suspects used after the hit-and-run.

Both suspects appeared in court on Sunday. Trujillo was ordered held on $250,000 bond Sunday in the hit-and-run accident. Magistrate Beth Faragher also ordered Trujillo to stay away from the surviving member of the family, Frank Bingham.

The judge did not explain her reasoning for the order, though state law allows for protection orders to be issued when it is determined there is a credible threat to the life of the victim. Lynn Kimbrough, spokeswoman for the district attorney's office, said such orders are fairly routine in cases where victims have suffered violent attacks.

Snell was charged as an accessory in crime, according to court documents, and is said to have been the passenger in the vehicle. Snell was also ordered to stay away from Frank Bingham. Snell posted $25,000 bail and was released from jail Sunday. His lawyer, Jesse Wiens, said the charge against his client has not been specified.

Trujillo, who was not represented by a lawyer, made no comment except to say he understood the judge's order.

The defendants were not asked to make a plea, and the next court date was not set.

Frank and Becca Bingham were out for a family evening walking with Macie, wearing a ballerina princess outfit, and Garrison, dressed in a Superman cape, riding side-by-side in a double stroller, The Denver Post reported. They were crossing lawfully at the intersection, which had a traffic signal.

Frank Bingham, director of a University of Colorado at Denver enrichment center called the Colorado Principals' Center, was listed in fair condition with nerve damage to his right arm and multiple bruises.

His family said he is recovering and was more coherent on Sunday. Mayor John Hickenlooper also visited Frank on Sunday.

"I am devastated by this tragedy, and my thoughts and prayers are with Frank and his family," said Hickenlooper.

Friends said Macie and Garrison were best friends and they loved dressing up in Halloween costumes.

"On Halloween, Macie came over in her princess outfit, just as pretty as could be," said neighbor Ann Vessels.

Next-door neighbors Darrell and Ann Vessels said they knew the Bingham children well.

"When we moved in, one wasn't even born yet. Just fantastic people, fantastic people," said Darrell Vessel.

A makeshift memorial has been set up at the base of a pole at 15th and Arapahoe streets. Mothers like Laura Taylor came to pay their respects to a family taken so tragically.

"I can't even comprehend what it would be like to lose one of them," said Taylor. "It's so senseless."

"The whole neighborhood is pushing for Frank," said Ann Vessels. "We're going to take care of him and do whatever we can."

Frank was getting ready to go to law school. He and his wife were planning on putting their home up for sale to support that effort.