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Mary Altaffer, Associated Press
New York State officers stand near the road block at the perimeter of the search area for convicted murderer David Sweat, Saturday, June 27, 2015, in Malone, N.Y. Convicted murderer Richard Matt was shot and killed by a Border Patrol agent in a wooded area about 30 miles from the Clinton Correctional Facility on Friday. Sweat is on the run, authorities said.

MALONE, N.Y. — The latest on the manhunt following the escape of two convicted murderers from a maximum-security prison (all times local):

11:00 a.m.

A sheriff involved in the search for the surviving inmate who escaped from a northern New York prison three weeks ago says the convicted killer could have a tougher time eluding searchers without his partner.

Inmate David Sweat is still on the lam a day after fellow escapee Richard Matt was shot to death by officers. Clinton County Sheriff David Favro says Sweat is likely fatigued and no longer has a partner to watch his back or act as a lookout while he rests.

Officers continued to focus Saturday on heavy woods 30 miles west of Clinton Correctional Facility as they looked for Sweat around the area where Matt was killed.

Favro says there is no evidence the pair had split up.

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8:45 a.m.

Searchers who tracked and killed one murderer who broke out of a northern New York prison three weeks ago are combing the same heavily wooded area for the surviving escapee.

Officers continued to focus Saturday on rugged terrain 30 miles west of Clinton Correctional Facility as they looked for David Sweat, who escaped from the maximum-security prison June 6 with Richard Matt. Police manned roadblocks in the neighboring towns of Malone and Duane as a helicopter buzzed over the woods.

Matt was shot to death Friday by a border patrol team responding to a civilian complaint about a gunshot fired at a camping trailer. Authorities say Matt was armed and failed to respond to an order to raise his hands.

Police said Friday night that they had no confirmed sightings of Sweat.