The United States military says it has killed “several militants” in yet another drone strike in Somalia, bringing to 28 the total of such raids this year.

The US Africa Command (AfriCom) broke the news in a statement on Wednesday, saying the Tuesday evening attack against the al-Shabab terrorist group took place 60 miles (96 kilometers) northwest of the capital, Mogadishu, and was coordinated with Somalia’s government.

“Al-Shabab has publicly committed to planning and conducting attacks against the US and our partners in the region,” the force said in a statement.

Earlier this month, Washington warned its diplomatic staff in Mogadishu of an imminent threat and ordered all non-essential staff to leave the city.

The AfriCom statement did not provide further details about the exact number of the casualties. It was not clear if there were any civilian casualties either.