Yemen's Houthi militias reportedly shelled Saudi Arabian border towns on Tuesday, leading the Saudi military to strike back, killing at least 43 Yemeni civilians.
The shelling of the Saudi city of Najran killed three civilians. According to eyewitness reports, many residents left the area after Tuesday's shelling.
In Aden, Houthis reportedly took control of the city's al-Tawahi neighborhood. Maj. Gen. Ali Naser al-Hassani, a military commander loyal to the Yemeni president who fled to Saudi Arabia was killed in the fighting.
The Saudi-led bombing campaign in Yemen has killed over 1,200 people since it began in March, according to UN figures.