Up to 40km of coastline affected by oil pollution, Omani environmental authority says.

Oman battles a 390 sq km oil slick from the grounded Caroline Bezengi, using satellites, aircraft and marine surveys to track pollution and protect sensitive coasts.

Current modelling suggests it is generally moving northeast and could advance by around 121 kilometres over the next 48 hours

Leak area widens after unexplained blast on sanctioned Caroline Bezengi