Firefighters were called to a cell fire in the welfare wing at HM Prison Lewes over the weekend.
Crews from Lewes and Barcombe were sent to the prison at 1.19pm on Saturday (13th October), along with the Aerial Ladder Platform from Brighton.
Watch Commander, Dave Washington, said: “On arrival we were informed that the fire had been brought under control by the trained staff of Lewes Prison. However, the cell was still full of smoke and they had not made entry to ensure the fire had been fully extinguished.
“Two firefighters wearing breathing apparatus entered the cell to confirm the fire had been fully extinguished. A Positive Pressure Ventilation Fan was used to clear the remaining smoke.
“A Fire investigation officer and Sussex police officer then undertook a combined investigation to establish cause.”
Crews remained at the scene for around an hour.