Two top commanders in terrorist group Al Shabaab were reportedly killed in an air strike, BBC News reported.

According to residents in southern Somalia, the strike hit a vehicle that militants were driving in from Jilib to Barawe.

A Kenyan military official told BBC that they sent troops to Jilib and there could have been some casualties. However, correspondents have suggested it is unlikely that Kenya would be responsible for the strike.

Hassan Nur, a resident who witnessed the strike, explained the scene to Reuters.

"This afternoon, I heard a big crash and saw a drone disappearing far into the sky, at least two militants died," Nur said.

"I witnessed a Suzuki car burning, many al-Shabab men came to the scene. I could see them carry the remains of two corpses. It was a heavy missile that the drone dropped. Many cars were driving ahead of me but the drone targeted this Suzuki."

Al Shabaab is the terrorist group responsible for the Westgate Mall attack that occurred in Nairobi, Kenya in September. The assault resulted in 67 deaths and left over 100 people wounded.

Earlier this month, the U.S. attempted to raid Barawe but failed to capture their target after meeting heavy resistance from militants. It is believed they were searching for Abdukadir Mohamed Abdukadir, also known as Ikrima, during the raid.

Residents of Barawe noted that Ikrima, one of the group's leaders, is usually surrounded by at least 20 armed guards.

BBC also reported that the U.S. has carried out air strikes in Somalia before.

In 2008, Al Shabaab commander Aden Hashi Ayro was killed in a U.S. strike. One year later, Saleh Ali Saleh Nabhan -- connected to the 1998 U.S. Embassy bombing in Nairobi and 2002 airline and hotel attacks in Mombasa, Kenya -- was killed in a strike as well.