Yemeni officials say five civilians and 12 fighters from the forces fighting Shiite rebels known as Houthis were killed this month by rebel-planted mines in a central province.

The officials, medical and security officials from the anti-rebel side, say Wednesday that the Houthis planted the mines before they were pushed out from their last outpost in Marib province last week.

In Taiz province, medical and security officials say 13 Houthis and allied fighters were killed in airstrikes by a Saudi-led coalition, while fierce clashes were ongoing near the provincial capital's airport.

The officials and witnesses spoke on condition of anonymity because they were not authorized to talk to the media or for fear of reprisals.