Authorities in the state of New York have intensified efforts to catch a second escaped murderer - after one of the men was killed in woods by a border patrol agent.
Richard Matt was tracked down to a remote cabin - 30 miles from the jail, but David Sweat is still on the run.
The pair used power tools to escape three weeks ago.
New York Governor Andrew Cuomo says police were alerted after a camper van was attacked:
