One of two inmates who escaped from an Arizona prison is now in custody as the search for the second fugitive and their suspected accomplice continues.

Federal agents captured Tracy Province in Wyoming just outside Yellowstone National Park, Monday. Authorities had been alerted about two men and one woman on the loose and possibly headed to Canada.

The other inmate, John McCluskey, as well as his cousin and suspected accomplice Casslyn Welch, have yet to be caught.

"They consider themselves as Bonnie and Clyde," said David Gonzales, U.S. marshal for Arizona. "This is very, very serious business."

One of the fugitives' mother has also been arrested in connection with the escape. Police believe she gave the men money, clothing, and a getaway car.

Province and McCluskey escaped from Arizona's Kingman Prison on July 30. Investigators said Welch tossed wire cutters to the convicts to cut through the fence.

Clues to their capture may be buried in a burned trailer, where investigators discovered the bodies of an Oklahoma couple last Wednesday. Evidence now ties the fugitives to the crime.

"We have linked one of the subjects through forensics to the crime scene in Santa Rosa," said Robert Shilling of the New Mexico State Police.

Photographs of the escapees were published in newspapers and on television, including "America's Most Wanted." Investigators said the photos have already generated tips.

"We're hoping the right lead will come in and we'll be able to move quickly on it," New Mexico State Police spokesman Peter Olson said

Province was serving a life sentence for murder and robbery in Arizona. McCluskey was serving a 15-year prison term for attempted second-degree murder, aggravated assault, and discharge of a firearm.