Malaysian state oil firm Petronas on May 31 posted a more than doubling in first-quarter profit on the back of a recovery in commodity prices and lower overall costs.

The world's fourth-biggest LNG exporter said post-tax profit was 9.3 billion ringgit ($2.25 billion) for the January to March period, against 4.5 billion ringgit in the same quarter last year.

($1 = 4.1250 ringgit)