KONJIC, Bosnia-Herzegovina (August 10, 2012)--Heavy winds Friday were keeping military helicopters from fighting four wildfires in southern Bosnia, including one that’s burning close to an ammunition factory.

That fire has set off explosions in a minefield close to the factory.

The other three fires are on steep hills not accessible to firefighting teams and one is creeping up on Glavicina, a village close to the town of Konjic.

Husein Hodzic, deputy head of the Konjic civil protection agency, said Friday that the rough winds had turned two wildfires into four overnight.

This summer has been one of the hottest on record in Bosnia, with virtually no rain for two months.

Landmines left over from Bosnia's war in the early 1990s greatly complicate efforts to deal with some of the wildfires.