Defence Minister Tasos Mitsopoulos was rushed to hospital in the morning, after he fainted at work.
He is being treated at the Emergency Room of the Nicosia General Hospital.
His condition is very serious.
Acting President Yiannakis Omirou, members of the Cabinet, party leaders and other officials are visiting the hospital to be briefed on the state of the Minister`s health.
Neurosurgeon Akis Lambrou told the press that a team of neurosurgeons from the General Hospital is doing their best for the Minister.
Health Minister Philippos Patsalis has said that the media will be briefed as and when needed by the doctors only.