"There was a small fire incident at the hospital, but it was extinguished immediately," a source at Armed Forces Institute of Cardiology in Rawalpindi told AFP.

Another source confirmed the fire incident was "of a minor nature".

Officials said the cause was being investigated and may have been started by an electrical short circuit.

Musharraf was taken to hospital last week after falling ill while travelling to a special court considering treason charges against him. He was diagnosed with coronary artery disease, with his lawyers pleading for him to be allowed to receive treatment abroad.

Musharraf's lawyer Ahmad Raza Kasuri said that the former president was not affected.

"He is safe as the fire incident happened on another floor," Kasuri told AFP.

The court has ordered Musharraf to appear in person on Thursday, after considering a medical report on his heart complaint.

Musharraf has yet to appear in person before the specially-convened three-judge tribunal, missing hearings due to security fears and the health scare.

Source: AFP