PRISTINA, Yugoslavia (AP) _ With two weeks left before the deadline for the Kosovo Liberation Army to disarm, peacekeepers have found hundreds of weapons hidden in a southern Kosovo village, NATO said today.

The arms cache _ which included 250 Kalashnikov rifles, 50 machine guns as well as other explosives and ammunition _ was found Thursday in the village of Rogovo, about six miles from the Albanian border, Maj. Roland Lavoie said.

Lavoie did not say whether the weapons belonged to the KLA, the former rebel group.

Sept. 19 is the deadline for the KLA to completely disarm. Its members are already supposed to have turned in most of their weapons.

In another development, the United Nations announced today it is replacing the Yugoslav dinar with the German mark and other Western currencies in Kosovo, even though Kosovo officially remains a part of Yugoslavia. U.N. officials said authorities in Belgrade were not consulted before the decision was made.

Meanwhile, forensic experts were expected to begin examining a southwest Kosovo field believed to contain the bodies of ethnic Albanian civilians killed in the Serb crackdown.

Though no peacekeeping troops or international forensic experts were available at the site near Ljubizda on Thursday, it appeared to have been the mass grave announced hours before in London by British Foreign Secretary Robin Cook. Cook offered no details beyond saying 50 bodies were found buried in a garbage dump at Ljubizda, a village southwest of Pristina.

Abedin Ademi, 67, a farmer whose field borders the area, said the grave contained bodies of ethnic Albanians killed in April by Serb forces.

Such finds feed anti-Serb sentiment among Kosovo Albanians, and have led to a rash of violence against the dwindling Serb minority in Kosovo.

The head of the KLA on Thursday urged an end to revenge-taking against Serbs and called on them to return to the province.

Emerging from a meeting in London with Cook, KLA leader Hashim Thaci appealed to Kosovo Serbs to return ``because we are interested in establishing in Kosovo a multiethnic society.''

His comments were sure to be ignored by Serbs in Kosovo and elsewhere. They blame the KLA for the wave of anti-Serb violence since Yugoslav President Slobodan Milosevic's troops left the province in June as part of a peace agreement, in return for an end to NATO bombing.

Most of Kosovo's prewar population of 200,000 Serbs have fled since then, amid dozens of killings, abductions and other violence directed against them to avenge the deaths of more than 10,000 ethnic Albanians during the 18-month Serb crackdown.

In Belgrade, deputy Serbian Premier Vojislav Seselj accused the United States of being allied with Kosovo Albanian ``murderers, drug traffickers and terrorists'' wreaking violence on Kosovo Serbs.

Yugoslav army and Serb police forces should return peacefully to Kosovo as soon as possible, Seselj said.

``If there are no peaceful means available, we shall have to find other ways,'' he said.