LONDON- Exports of Nigeria's four main crude oil grades are set to jump in June to 895,000 barrels per day (bpd) from 740,000 bpd in May, according to preliminary loading programmes.

Nigerian producer Aiteo said it declared force majeure over the weekend on one of the two trunk lines transporting Bonny Light to the export terminal after a fire. It was not immediately clear how the rate of exports would be affected. 

(Reporting by Julia Payne, editing by Louise Heavens) ((julia.payne@thomsonreuters.com; +44 207 542 1836;))