Crude oil production in Colombia came in at an average of 916,000 barrels per day in March, down 4% from the previous month’s total of 955,000 bpd, the Mines and Energy Ministry said Thursday.

Average natural gas production last month totaled 1.057 billion cubic feet per day, down 0.71% from February’s output of 1.065 billion cfd, the ministry said, citing preliminary figures.

Unlike in previous monthly reports, the ministry did not indicate the reasons for the output decline.

Colombia Reports