The two bombings, less than 10 minutes apart, targeted the buses on separate ways to pick up soldiers as their daily routine.
Both buses were still empty of soldiers when roadsides bombs went off, according to police officers.
Police forces cordoned off both roads. Investigators at the scenes blamed al-Qaida in the Arabian Peninsula (AQAP) for the bombings as they bear the hallmarks of the terrorists.
The incidents came about two weeks after the AQAP attacked an air forces bus near the air base in Sanaa, which killed at least 12 people and injured a dozen others.
The brazen attack was in response to Yemeni President's speech hours earlier, according to a militant statement received by Xinhua.
President Abd-Rabbu Mansour Hadi said in a speech to the police academy in Sanaa that he had asked the United States to allow the Yemeni military to use the U.S. drones to keep fighting al-Qaida militants.
Hadi said that 40 al-Qaida suspects had been killed in recent counterterrorism operations, and he vowed to keep fighting the Islamists until they laid down their weapons.
The U.S. drones increased air raid last month on the AQAP members in Yemen's southern regions after Washington temporarily closed its embassy in Sanaa due to security threats.
The Yemen-based AQAP, which emerged in January 2009, is considered the most strategic threat to the country and its neighboring oil-rich Saudi Arabia.
--ANI (Posted on 10-09-2013)