Transcript for Prosecutors fear drug lord 'El Chapo' may be planning a jail break
this Sunday morning and the concerns this morning over the notorious convicted drug lord el Chapo, the feds fearing recent requests by Joaquin Guzman known for his escapes from two high security prisons may have an elaborate plan to break out again. ABC's erielle reshef joins us with more. El Chapo's attorneys argue the conditions of his two-year solitary confinement has been inhumane with no sunlight or fresh air. Federal prosecutors are not buying it, saying it's all part of the drug lord's latest ploy. Reporter: He's one of the most notorious drug kingpins in the world. The notorious drug lord el Chapo. El Chapo. El Chapo. Joaquin "El Chapo" Guzman. Reporter: Now federal prosecutors expressing concern that he could be plotting his next jailbreak. He was a killer. He was a murderer. He was a manipulator, but he was also very, very smart. Reporter: Guzman behind bars at a federal correctional facility in New York, convicted of ten counts of drug trafficking and conspiracy to murder. In recent weeks his lawyer submitting a letter to a judge, asking that El Chapo be allowed at least two hours of recreation outdoors per week, access to the commissary, earplugs, water bottles and other accommodations, lamenting that the conditions of his solitary confinement violate the 8th amendment's ban on cruel and unusual punishment, as well as the fundamental norms of human decency. But federal officials fiercely pushing back, saying those requests may be part of a brewing scheme to bust out. Prosecutors citing this foiled 1981 jailbreak at the same facility, hijacked helicopters dropping weapons to inmates on the roof as they unsuccessfully attempted to flee. El Chapo, the so-called ringleader of the ruthless sinaloa cartel, infamously managing to escape two Mexican prisons in the past, one through this mile-long underground tunnel. The cunning criminal ultimately captured and whisked to the U.S. To face justice. He sees the window closing because he's about to be sentenced. So maybe he thinks that his best chance to get away again would be while he's still in New York. Reporter: El Chapo is due to be sentenced in June. He faces life behind bars. Right now he's being housed in that correctional facility here in New York but he could be transferred to a maximum security prison in Colorado known as the alcatraz of Colorado so he would have no chance -- virtually no chance of escape. The window is definitely closing. It's closing. Erielle, thank you very much. Really appreciate it.
This transcript has been automatically generated and may not be 100% accurate.