new york prison last month. new york times revealing more what david sweat revealed about the months of plan and escape. richard matt was shot and killed by police. we get more this morning from miguel marquez. >> reporter: christine, interesting details in the new york times account of how david sweat and richard matt escaped from the prison in new york. saying that sweat was free for months under the tunnels under the clinton correctional facility. at 11:30 p.m. he would go down in the tunnels after the last head count and return before 5:30 a.m. before the first head count of the morning. one of the most interesting bits he had to figure out how to get out. he chipped away at the concrete wall of the prison using a sledgehammer and hand tools. he caught a lucky break says the new york times. they turned off the steam to the steam pipe that provided heat to