More than 100 people were killed and dozens wounded in a missile and drone attack blamed on Huthi rebels in central Yemen, officials said Sunday.

Saturday's strike follows months of relative calm in the war between the Iran-backed Huthis and Yemen's internationally recognized government, which is supported by a Saudi-led military coalition.

The Huthis attacked a mosque in a military camp in the central province of Marib — about 170 kilometres (105 miles) east of the capital Sanaa — during evening prayers, military sources told.

The drone and missile strike came a day after coalition-backed government forces launched a large-scale operation against the Huthis in the Nihm region, north of Sanaa.