The second New York prison escapee is talking to investigators today, even though he was shot during his arrest Sunday.

Rick Leventhal reported the latest details this afternoon on "The Real Story," as we learn more about how David Sweat and Richard Matt spent their three weeks on the run.

The massive manhunt finally came to an end Sunday afternoon when state police Sgt. Jay Cook spotted Sweat walking along a road in Constable, about 1.5 miles from the Canadian border.

Sweat refused Cook's commands to stop, taking off toward a tree line. Concerned that Sweat would disappear into the forest, Cook shot him twice in the torso.

Sweat, now in serious but stable condition, has provided some new details to law enforcement over the last 24 hours.

Sweat and Matt's original plan was to head to Mexico, Leventhal reported. The plan never got off the ground because prison worker Joyce Mitchell failed to pick them up once they emerged from a manhole outside the prison.

Sweat said the two had planned to kill Mitchell's husband, then drive to Mexico.

"Plan B" was to get across the Canadian border. Sweat said he had split from Matt a week earlier, believing Matt was slowing him down. 

Sweat almost got to Canada, getting to within a mile-and-a-half of the border. He was carrying a bag containing Pop Tarts, insect repellant, maps and tools. 

Authorities said last week that Sweat and Matt were able to shelter at some point in a hunting cabin. Sweat is only expected to be hospitalized a few more days before going back to prison.

Matt was shot dead by a border patrol agent on Friday afternoon, having previously stolen a 20 gauge shotgun from the cabin.

The two had been on the run for three weeks after breaking out of Clinton Correctional Facility in Dannemora, N.Y.

Watch the report above.