JOHOR BARU - The "second fire" reported Wednesday at Sultanah Aminah Hospital was due to a spark caused by a plug point that was exposed to water in the operating theatre.
The incident which caused smoke to emit in the theatre forced staff and patients to evacuate.
Staff at the hospital was able to prevent a fire from breaking out.
Johor Baru (South) OCPD Asst Comm Sulaiman Salleh said police had to shut down certain sections of the main building since Tuesday when a fire killed six people in the intensive care unit.
"The spark occurred at around 1.50pm when water from cleaning works on the second floor splashed into a plug point in the operation room on the first floor.
"The spark caused smoke to emit but no one was injured due to the quick action of hospital staff," he told reporters.
Read also: JB hospital fire blamed on faulty wiring
ACP Sulaiman said the operating threatre is under renovation.
"We have closed down the main building for 24 hours due to security reasons," he said.
Many hospital staff in blue operating uniforms were seen rushing out of the trauma ward with patients.
According to a volunteer, smoke was coming out of the operating theatre located on the first floor of the ward.
A fire engine was seen entering the hospital ground and security personnel asked hospital staff, patients, and public to leave the area immediately.