A bomb planted on a military bus exploded Tuesday in the Yemeni capital, wounding 13 passengers, a day after multiple blasts rocked Sanaa, a military official said.

The explosion targeted a bus transporting soldiers and officers in the southern Dar Salam neighborhood, the official said, adding that four of the wounded were in critical condition.

The attack is the latest in a series of bombs and shootings targeting military personnel in Yemen, which is struggling to achieve a political transition that aims to turn the republic into a federation.

The bombing also comes a day after rockets and explosions shook the capital, including one near the French embassy.