MORINA, Albania, April 30 (AFP) - The Balkans' refugee crisis deepened Friday, with a surge of 11,000 Kosovars crossing into Albania and Macedonian officials complaining their resources were being strained to the breaking point.

The new turns in the humanitarian drama came as Russia's special envoy to Yugoslavia reported progress in talks to bring peace to Kosovo province, where Serb violence against ethnic Albanians triggered a campaign of NATO airstikes.

Customs officials in the border town of Morna said that more than 11,000 refugees crossed over into Albania on Friday, most of them coming from southern Kosovo, principally from the province's second city of Prizren.

The UN High Commissioner for Refugees (UNHCR) said in Geneva it appeared Serbian forces were involved in a "final push" to oust ethnic Albanians in the city.

"It is panic in the city of Prizren, which is being emptied," said one refugee. Another added: "Those who had not left this morning, like our neighbours, were getting ready to do so in the afternoon."

Another woman arriving at the frontier in a car, Zylfie Berisha, told AFP that the new exodus began Thursday after repeated broadcasts on Yugoslav Studio 3 radio called for a "general mobilization" of all able men.

"The Yugoslav military police started coming down into the villages around Prizren to enlist the men by force. Then it set set up roadblocks at the northern entrance of the city and that's when Prizren started to empty," Berisha said.

The refugees, most of whom arrived by car and seemed to belong to Prizren's middle class, did not appear to have been mistreated during the 70-kilometer (45 mile) trek, which ran into traffic jams as long as 30 kiloeters (19 miles).

The latest arrivals brought to more than 620,000 the number of people who hve fled Kosovo since the crisis began in the Serbian province last year. Some 384,000 are in Albania and nearly 161,000 in Macedonia.

In a sign of mounting tensions, Macedonian Interior Minister Pavle Trajanov accused the international community of having no strategy for solving the refugee situation, and called for more evacuations to third countries.

"Macedonia is at the edge of humanitarian catastrophe and the international community is not taking care of it", Trajanov told AFP. "Every day we are under pressure to build new camps but there is no strategy for solving the problem."

Some 20,000 new refugees have arrived in Macedonia in the last four days, Trajanov said, adding that between 3,000 to 5,000 others were making their way to the border from the Urosevac region, south of Pristina.

"Pressure has been put on Macedonia to accept additional refugees, but everyone is avoiding to accept them in their own country," the minister said. "All possibilities of accomodation have been exceeded."

In other refugee developments Friday:

-- The first batch of ethnic Albanian Kosovar refugees to be hosted in the United States are to arrive next week, Secretary of State Madeleine Albright said.

-- The United Nations Security Council's non-aligned members called for the safe return of Kosovar refugees to their homes in a resolution proposed Friday.

-- Canada re-activated a plan to accept 5,000 Kosovo refugees, Immigration Minister Lucienne Robillard said. The first planeload of about 350 refugees was expected to land at the Canadian Forces Base in Trenton, Ontario, next Tuesday.

-- Germany said it was willing to take in further refugees from Kosovo, in addition to the 10,000 people it has already promised to admit.

On the diplomatic front, Yugoslav President Slobodan Milosevic and Russia's envoy Viktor Chernomyrdin agreed Friday to continue talks on Kosovo after the former premier from Moscow sounded an upbeat note on their efforts.

"We discussed several points with regard to a peaceful resolution to the crisis in Kosovo. There has been some good progress," ITAR-TASS quoted Chernomyrdin as saying at Belgrade airport before leaving for Moscow.

The Russian envoy said the results of his meeting with Milosevic would be analysed in Moscow over the weekend. He will then travel to London and Paris, where he has been invited to discuss the Kosovo crisis.

But Albright, speaking before the conclusion of the Chernomyrdin-Milosevic talks, said the United States did not feel that it has received a "serious proposal" from Belgrade aimed at ending the conflict.

Meanwhile the North Atlantic Treaty Organisation continued its attacks after its heaviest night of raids since its air offensive began on March 24.

Montenegrin radio and television said four people were killed and six injured in two NATO attacks on a bridge across the river Lim in southeastern Montenegro Friday.

The mayor of the nearby town of Plav, Orhan Redzepagic, told the television the bridge was seriously damaged but not destroyed. He added that a power station, several houses and a local textile factory were also damaged.