■ The U.S. said it killed 52 extremists with an airstrike in Somalia.

JOHANNESBURG — The U.S. military on Saturday said it had carried out its deadliest airstrike in Somalia in months, killing 52 al-Shabab extremists after a “large group” mounted an attack on Somali forces.

The U.S. Africa Command said the airstrike occurred near Jilib in Middle Juba region. There were no reports of Americans killed or wounded.

The U.S. statement did not say whether any Somali forces were killed or wounded by the al-Qaidalinked extremists. Al-Shabab via its Shahada news agency asserted that its attack on two Somali army bases killed at least 41 soldiers. It described the location as the Bar Sanjuni area near the port city of Kismayo.

There was no immediate comment from Somalia’s government.

In neighboring Ethiopia, state television cited the defense ministry as saying more than 60 al-Shabab fighters had been killed and that four vehicles loaded with explosives had been “destroyed.” Ethiopia contributes troops to a multinational African Union peacekeeping mission in Somalia and has troops there independently under Ethiopian army command.

A Somali intelligence officer said al-Shabab had been amassing fighters for more than a week to launch a major attack against Somali and Kenyan forces to disrupt a planned offensive against the extremists. The officer said some 400 extremists, including foreign ones, had been prepared, including two suicide car bombers. The officer spoke on condition of anonymity because they were not authorized to speak to reporters.

Al-Shabab controls large parts of rural southern and central Somalia and continues to carry out high-profile suicide bombings and other attacks in the capital, Mogadishu, and elsewhere.