Saudi-led coalition jets, which have bombed Yemeni rebel positions since March, intervened when 'dozens of soldiers defected and announced their support' for Shiite Huthi rebels on Tuesday, prompting clashes with pro-government troops, the military source said.
The incident took place at the 23rd Mechanised Brigade, stationed near the border with Saudi Arabia and left 'at least 30 soldiers killed and dozens wounded' on both sides, he told AFP.
'Armoured vehicles and troop carriers were destroyed or damaged' in the air raids and clashes between rival units before the situation was brought under control, the source added.
Troops loyal to former president Ali Abdullah Saleh have joined forces with the Huthi rebels, who seized the capital almost unresisted in September before advancing southwards in the impoverished Gulf country.
Saudi Arabia fears the Huthis are trying to bring Yemen under the influence of Shiite Iran.
Get Breaking news, live coverage, and Latest News from India and around the world on NDTV.com. Catch all the Live TV action on NDTV 24x7 and NDTV India. Like us on Facebook or follow us on Twitter and Instagram for latest news and live news updates.