The United States conducted 20 airstrikes against the al-Qaeda in Yemen's Arabian Peninsula.
Multiple locations were struck with the US military targeting militants, equipment, infrastructure, heavy weapons systems and fighting positions in the Abyan, Shabwa and Baydha regions.
Manned and unmanned aircraft were used and the military assesses that al Qaeda personnel were killed.
"The strikes were conducted in partnership with the government of Yemen," CNN quoted US Navy Captain Jeff Davis as saying.
The strikes are the first ones to target the Yemen-based terror group since the deadly January raid in Baydha that left Chief Petty Officer William "Ryan" Owens dead and several other service members wounded. The mission also cost several civilians their lives and resulted in the loss of a US aircraft.