Saudi jets attacked a popular market in the port city of Mokha on Wednesday evening, leaving four people dead and eleven others injured, the al-Yawm daily newspaper reported.
Yemeni army troops retaliated by firing an OTR-21 Tochka missile at the strategic al-Anad Air Base housing Saudi-led forces in Yemen's Lahij province. There were no immediate reports of casualties.
Yemen's army spokesman Brigadier General Sharaf Luqman said the missile was launched following a tip-off that pro-Saudi troops inside the base were planning an attack on Ta’izz.