Three Mount Carmel patients escaped from the hospital on Friday night though one of them has since returned, the Department of Information said.
The three were patients,who had voluntarily requested to be given treatment in a section of the hospital where those with mental issues and drug problems are treated.
The police have been informed about the situation and are investigating. An internal board has been set up to investigate the case.
One of the three patients returned to the hospital during the day.
Patients receiving treatment at Mount Carmel, even those who do so voluntarily, need a doctor’s certificate to be discharged.