Escaped killers 'could literally be anywhere'

(CNN) -
The U.S. Marshals Service issued federal arrest warrants Sunday for two convicted killers who escaped from a maximum security prison in upstate New York over the weekend.
The warrants charge Richard Matt and David Sweat with unlawful flight to avoid prosecution, according to William O'Toole, a U.S. Marshals Service spokesman. The warrants clear the way for the federal government to involve its considerable resources in the manhunt.
"Every resource available to us will be used in bringing these two men to justice," O'Toole said.
Also Sunday, New York Gov. Andrew Cuomo announced a $100,000 reward for information leading to the pair's capture.
"We're leaving no stone unturned," Maj. Charles Guess of the New York State Police said Sunday. "All available assets are being brought to bear."
Matt, 49, and Sweat, 35, were discovered missing from their cells Saturday morning during a "standing count" of inmates at the Clinton Correctional Facility in Dannemora, New York, state police said.
The pair used power tools and decoys designed to look like their sleeping selves in the sophisticated plot, they said.
According to authorities, the inmates -- who occupied side-by-side cells -- cut through a steel wall and followed a series of tunnels until they emerged from a manhole outside the prison walls.
'They could be literally anywhere'
Guess said authorities do not know if the pair are still together, had help on the outside, or if they have access to a vehicle.
Although they've received more than 150 leads, Guess said Sunday that "they could be literally anywhere."
In addition to the federal marshals service, the FBI is also among the some 250 law enforcement officials involved in the manhunt, according to Guess.
With the facility's proximity to Canada, only 80 miles south of Montreal, and with one of the inmates having ties to Mexico, he said authorities on both international borders have been alerted.
Matt, who has "Mexico Forever" on his back, is well known to Mexican authorities. In 2007, he was extradited from Mexico back to New York on a decade-old murder charge, documents from the Mexican Attorney General's office and New York State Police show.
An elaborate escape
Matt and Sweat apparently were last seen at 10:30 p.m. Friday during a standing count, authorities said.
Head counts are performed every two hours throughout the night when guards visually check to see whether inmates are in their bunks, Clinton Correctional Facility Supervisor Steven Racette said.
The escapees tricked the guards by arranging things in the bunks to look "like people were sleeping ... with these sweatshirt hoodies on," the governor said.
Once they were out of their cells, they then followed a catwalk "down an elaborate maze of pipes into tunnels and exited a series of tunnels at the manhole cover," he said.
They evaded detection for some seven hours, until the inmate count 5:30 a.m. Saturday.
Exactly how they got the necessary tools remains a mystery, but Cuomo -- who toured the escape route Sunday -- said it was possible the tools came from workers performing regular maintenance on the 1845 facility.
"It was elaborate, it was sophisticated," he said of the plot. "It involved drilling through steel walls, steel pipes."
Guess said the company who employs the maintenance workers was cooperating with the investigation.
Commemorating the first-ever escape in the facility's 170 year history, the men left behind a yellow sticky note on a pipe, with the message, "Have a nice day!"
"These are dangerous people"