Suspected US airstrikes over the weekend targeting Yemen’s Houthi militants killed at least six people, the group said Sunday, while a bombing video posted by US President Donald Trump suggested casualties in the overall campaign may be higher than the Houthis acknowledge.

A strike Sunday night in Sanaa, the rebel-held capital of Yemen, hit a house, killing at least four people and wounding 16 others, the Houthis said. Their al-Masirah satellite news channel showed images of the damaged home and people receiving care in a hospital.

The strike on the house in Sanaa’s Shu’ub district allegedly targeted a Houthi leader.

These attacks have intensified following an increase in Houthi attacks on American and Israeli ships.