Suspected U.S. airstrikes battered rebel-controlled areas of Yemen into Wednesday, with the Houthis saying the attacks killed at least six people across the country.

DUBAI, United Arab Emirates (AP) — A new American airstrike campaign against Yemen’s Houthi rebels appears more intense and more extensive, as the U.S. moves from solely targeting launch sites to firing at ranking personnel as well as dropping bombs in city neighborhoods, an Associated Press review of the operation shows.

Houthi rebels said U.S. airstrikes hit Yemen’s capital overnight and into early Monday morning, killing at least three people. Strikes in Sana’a reportedly killed one person, with the