Photos:: New York state prison escape

New York State Police officers maintain a roadblock along Highway 30 as the manhunt for escaped convict David Sweat continues near Malone, N.Y.

A Department of Corrections officer places a flair at a roadblock near the scene where escaped convict Richard Matt was shot and killed.

State corrections officers march down Sugarbush Road in Malone, N.Y., as they search for two escaped prisoners from Clinton Correctional Facility.

Joyce Mitchell is arraigned in City Court near Plattsburgh, N.Y. Mitchell is accused of helping two convicted killers escape from Clinton Correctional Facility in Dannemora.

State troopers search an area in Elsinore, N.Y., as the weeklong manhunt for escapees Richard Matt and David Sweat continues.

Police search near Saranac, N.Y., for prisoners Richard Matt and David Sweat.

Law enforcement officers walk along Route 3 and Trudeau Road in northern New York after emerging from the woods during a search for the two escapees.

A law enforcement helicopter joins the search.

Officers take positions along Route 3 during a search for two escapees from Clinton Correctional Facility.

A cut open sewer pipe through which convicted murderers David Sweat and Richard Matt escaped from the maximum security Clinton Correctional Facility in Dannemora, N.Y. Sweat was convicted of first-degree murder for the killing of a sheriff’s deputy in 2002 and Matt was convicted of murder and kidnapping for beating a man to death in 1997.

An apparent message left as convicted murderers David Sweat and Richard Matt escaped from the maximum security Clinton Correctional Facility in Dannemora, N.Y.

A cut open sewer pipe through which convicted murderers David Sweat and Richard Matt escaped from the maximum security Clinton Correctional Facility in Dannemora, N.Y.

New York Gov. Andrew Cuomo is shown an opening cut in a cell wall through which convicted murderers David Sweat and Richard Matt escaped from the maximum security Clinton Correctional Facility in Dannemora, N.Y.

An opening cut in a cell wall through which convicted murderers David Sweat and Richard Matt escaped from the maximum security Clinton Correctional Facility in Dannemora, N.Y.

New York Gov. Andrew Cuomo is shown a sewer pipe cut open through which convicted murderers David Sweat and Richard Matt escaped from the maximum security Clinton Correctional Facility in Dannemora, N.Y.

New York Gov. Andrew Cuomo is shown a manhole through which convicted murderers David Sweat and Richard Matt escaped from the maximum security Clinton Correctional Facility in Dannemora, N.Y.

A guard stands on the wall at Clinton Correctional Facility on Monday, June 8, 2015, in Dannemora, N.Y.   (Mike Groll / Associated Press)