At least 37 workers were killed when a dairy in western Yemen was bombed overnight, an official said on Wednesday after a seventh night of Saudi-led airstrikes against Shiite rebels.

Eighty others were wounded at the plant in Hodeida, Provincial Governor Hasan al-Hai said, without specifying whether the factory was hit by an airstrike or rebel shelling.

Rescue teams were looking for survivors under the rubble, according to a medic at a Hodeida hospital that received the dead and wounded.