Suspicious Bosnia Flights Serbian helicopters have been seen over Bosnia, United Nations officials said, raising concerns about whether a ban on aiding the Bosnian Serbs was being violated.

Citing information from pilots and other military personnel, he estimated that there had been 700 to 800 violations since April, mostly by Serbian helicopters ferrying supplies.

General Mladic traveled to Trnovo in a Serbian military helicopter, in defiance of a United Nations' ban on military flights in Bosnia.

Recently Serbian helicopters have been brazenly flying supplies across the supposedly sealed border.

A Serbian helicopter flew toward Junik and then turned in a wide arc toward the border, the thumping of its blades gradually fading away.

Serbian helicopters have repeatedly violated the ban.

Serbian helicopters flew a large number of sorties into eastern Bosnia and Herzegovina last week in violation of a United Nations ban, the Security Council was told today.

The Pentagon made its own charges, saying it has received reports of still another attack against a column of refugees by Serbian helicopters and planes.

The ban has been regularly defied by Serbian helicopters.

Serbian helicopters continue to fly in and out of battle with impunity, despite a U.N. "no-fly" zone that American and other NATO aircraft are supposed to enforce.