The Jamestown Foundation's Terrorism Monitor, 24 Jan 08:

Jailing Jihadis: Saudi Arabia’s Special Terrorist Prisons
Saudi Arabia is nearing completion of new purpose-built prison facilities for its program of rehabilitation and counseling for Islamist militants. Under this program five new specialized prisons have been built in Riyadh, Qassim, Abha, Dammam, and Jiddah over the span of approximately nine months. These new facilities have been designed to facilitate the dialogue process while at the same time housing individuals assessed to be significant security risks. These five new prisons are each designed to hold up to 1,200 prisoners.

The decision to build specially-dedicated facilities in which to focus on the counseling program was based upon a number of considerations. First and foremost was the fact that the existing prison facilities were not designed to promote dialogue and it was determined that successful advancement of the rehabilitation program could best be done through new specially-designed facilities. Furthermore, these new facilities would make the classification and segregation of detainees easier. The classification of detainees into those more predisposed to dialogue, and then separation of them from other more militant prisoners, would encourage and facilitate the work of the Advisory Committee, the Ministry of the Interior body that runs the rehabilitation program.....