A Nigerian businesswoman, her personal assistant and their Filipino pilot were killed Saturday in a helicopter crash in Nigeria's southwest, authorities said. The helicopter hired from OAS helicopters crashed in a hilly area outside Ife-Odan in Osun state about 71 miles (115 kilometers) away from its final destination Saturday, killing all three occupants, AP quoted the spokesman for the National Emergency Management Agency Yushau Shuaib as saying.