Yemeni security officials say more than 30 people have been killed in clashes between Shiite Houthi rebels and tribal fighters backed by al-Qaida militants in the embattled town of Radda south of the capital Sanaa.

The officials said the two sides traded heavy artillery fire that lasted until early Tuesday, killing several civilians and damaging houses and cars. The indiscriminate shelling has forced dozens of families to flee the town.

The officials spoke on condition of anonymity according to military regulations. […]