David Sweat, one of two prisoners who broke out of Clinton Correctional Facility in 2015, has been moved to Attica Correctional Facility. It is not exactly known why he was moved from a 'maximum' to one with 'super maximum' security measures, but it's not uncommon for prison transfers to happen based upon some worries or concerns about the inmate.

According to News 10 ABC  Department of Corrections and Community Supervision Spokesman Thomas Mailey had this to say about the move, “Based on biannual reviews, which include looking at concerns like an inmate’s behavior, allegiances with other inmates that could become disruptive or over-familiarity with a facility, there are approximately 5,000 inmate transfers from one prison to another every month.”

Sweat, 37, was sentenced to life in prison for killing a Broome County sheriff’s deputy in 2002, and he was additionally sentenced for his escape from the northern New York prison. He had previously been serving his sentence at Five Points Correctional Facility in Seneca County and was moved to Attica on November 17th.

Whether there were growing concerns about their ability to prevent Sweat from breaking out of Five Points or whether allegiances he formed with other inmates made him a liability, the specific reason for the transfer hasn't been disclosed.