Aid flights return to Sarajevo

SARAJEVO (AP) - United Nations officials said relief flights to Sarajevo resumed yesterday after a one-day break, while more cracks appeared in the shaky alliance between Bosnia's Croats and Muslims. Fighting between the two groups in several towns was reported to have subsided, but tensions rose elsewhere. Bosnian radio claimed Croatian militiamen seized a Bosnian government police building and surrounded Bosnian army headquarters in Mostar.

A UN flight co-ordinator said the aid airlift resumed shortly after midday when a British plane left Zagreb. By last night, nine aircraft had landed safely in Sarajevo, said another UN official.

In Croatia, the head of a UN- sponsored commission said it had found a mass grave near Vukovar, the eastern Croatian town that fell to Serbs last November after a bitter siege. Tadeusz Mazowiecki, the UN envoy investigating human rights violations in former Yugoslavia, told reporters in Zagreb that the grave's surface measured about 30 square yards. But he declined to give details of the location or of how many bodies might be buried there.

LONDON - Amnesty International said yesterday it was receiving regular reports of 'horrific' abuses in Bosnia- Herzegovina and warned that the Serbian province of Kosovo could soon erupt into civil war, Reuter reports.