A leader of Somalia's al Qaeda-linked militants Ahmed Abdi Godane was the target of an US air strike in Somalia, an US official said.
It is not clear whether the Al-Shabaab leader was hit in the strike, the official added.
Six militants were killed in the attack on two vehicles that were heading toward the coastal town of Barawe, Al-Shabab's main base.
Since taking charge in 2008, Godane has restyled the group as a global al Qaeda player - a transformation that was highlighted when it killed at least 67 people in an attack on a Kenyan shopping mall last September.
More top news
Police proposals suggest that all frontline police officers should have the option of arming themselves with Tasers.
Snow showers and sleet expected to affect parts of Scotland and Northern Ireland, with snow extending further south.
A court has ruled that the original coffin in which Lee Harvey Oswald was buried belongs to his brother, not the undertaker's that sold it.