Bosnian Hajrudin Bilalovic shows oil seeping from any earlier attempt at oil exploration near the town of Tuzla, 70 kms north of Sarajevo, Bosnia, on Thursday. A Bosnian oil company is looking for international partners to explore domestic oil fields that may contain more than 100 million barrels, officials said. Bosnia's biggest energy company, state-run Energoinvest, invited foreign companies to explore five already identified sites over the next five years. Energoinvest marketing director Ibrahim Bosto said he believes there are up to 100 million barrels, according to the results of prewar explorations with British and US companies.