The Latest on investigation into New York prison break (all times local):

5:40 p.m.

New York corrections authorities say they have made several security upgrades at the prison in northern New York where two killers escaped a year ago.

The Department of Corrections and Community Supervision says new cameras and security gates have been installed at Clinton Correctional Facility at Dannemora, 25 miles south of the Canadian border.

Spokesman Thomas Mailey says the prison also has retrained staff, disciplined employees responsible and named a new superintendent and senior administrators.

The department says it's reviewing the inspector general's investigative report released Monday into security failures and will implement reforms throughout the prison system.

The union representing 18,000 corrections officers at New York's 54 prisons says this "disturbing incident" shined a light on the need for sustained investment in training, technology and tools.

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3:40 p.m.

An investigation into the escape of two murderers from a northern New York prison last year concludes chronic staff complacency, complicit employees and failures of basic security procedures were to blame.

State Inspector General Catherine Leahy Scott's report released Monday about the breakout of David Sweat and Richard Matt says security lapses at the maximum-security Clinton Correctional Facility at Dannemora (dan-uh-MAWR'-uh) were longstanding.

The lapses include failures to search entering employees' bags, negligent night counts of inmates, inadequate cell searches and poor supervision of inmates and civilian employees by security staff.

A massive manhunt followed the escape.

Matt was shot dead by searchers June 26 in a wooded area 30 miles west of the prison. Sweat was shot and captured two days later near the Canadian border. He pleaded guilty to escape charges.