FIJIAN soldiers have taken over a police tactical response unit's headquarters, local television has reported, as fears grow that the South Pacific nation is about to suffer its fourth coup in 20 years. The television report has said police have been locked out of their premises on the outskirts of the capital Suva. The report has said no shots have been fired. The disbanding of the police unit was one of the demands of military chief Commodore Frank Bainimarama, who is threatening to overthrow Fiji's government.