outside the hospital where david sweat is being treated right now. miguel miguel, what's the latest? >> reporter: his condition has been upgraded to serious. it looks like he will make and it then be transferred somewhere else. but investigators really want to talk to him. he is the best link they have to figure out how they did all of this. there was a lot of discussion about whether or not joyce mitchell was their plan a. it's clear when she did not pick them up she left them scrambling for weeks. the prison break supposed to end in mexico. instead, convicted killer david sweat was captured just two miles from the canadian border. after three weeks on the run. authorities say sweat is talking saying the plan was for prison employee joyce mitchell to pick him and richard matt up and head south. >> it would kill mitchell's husband and then get in the car and drive to mexico on the theory that mitchell was in love with one or both of them.