Philadelphia, April 3 (RHC)-- Imprisoned journalist and former Black Panther Mumia Abu-Jamal has been transferred back to prison after he was taken to the intensive care unit at Schuylkill Medical Center in Pottsville, Pennsylvania, following a blackout from diabetic shock.

Mumia Abu-Jamal’s supporters said he was kept under heavy guard and isolated from visitors in the hospital. Following an international outcry, close relatives including his brother, Keith Cook, were allowed to visit.

Abu-Jamal has been moved back to the infirmary at SCI Mahanoy prison in Frackville, Pennsylvania, where he was not allowed visitors Thursday. His supporters rallied at the prison on Friday to demand medical care from doctors outside the facility. They say authorities may have withheld from Abu-Jamal details about blood tests that could have indicated he was suffering from diabetes.