Dannemora Schools on High Alert After Murderers Escape from Prison

New York State Police officers are stationed at all schools in the district.

— -- Schools in the small upstate New York town of Dannemora are on high alert and taking extra precautions after two convicted murderers escaped from the town's maximum-security prison.

On Sunday, officers searched all of the schools, buses and surrounding woods and swamps, according to a letter from Saranac Central School District Superintendent Jonathan Parks.

Bus drivers have also been instructed to wait for students who want to stay inside their houses until their bus arrives in the morning, the letter said.

Matt and Sweat escaped through holes in the wall of their adjoining cells, officials said. They made their way onto a catwalk about six stories high, then climbed down and emerged onto the street through a manhole cover.

"This was the first breakout [at the prison's maximum security portion] since 1865 and I want to make sure that it's the last," Cuomo said.

New York State is offering a $100,000 reward for information leading to Matt and Sweat's apprehension and arrest.

ABC News' Brian Hartman and Gio Benitez contributed to this report.

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