The US missile strike in Somalia on Monday was aimed at an al-Qaeda suspect wanted in connection with simultaneous attacks in Kenya, US officials say.
Saleh Ali Saleh Nabhan is suspected of involvement in bombing in 2002 of an Israeli-owned hotel and a failed attempt to shoot down an airliner.
He is also a suspect in the attacks on two US East African embassies in 1998.
At least four civilians were reportedly killed when the missiles hit Dhoble town early on Monday.
Islamist insurgents seized the town last week.
The Pentagon has not said whether it believes Mr Nabhan was killed or wounded in the attack, which involved cruise missiles fired from a submarine.
"Saleh Ali Saleh Nabhan is on the FBI's 'seeking information list'," AP news agency quotes FBI spokesman Richard Kolko as saying.
"[He] is wanted by the FBI for questioning in connection with the 2002 attacks at the Paradise Hotel and the unsuccessful surface to air missile attack against an Israeli airliner in Kenya."
The US has an anti-terror task force based in neighbouring Djibouti and bombed the area a year ago.
The US accused the Somali Islamists of harbouring those responsible for the 1998 attacks on its embassies in Kenya and Tanzania.
The Islamists denied this, as well as reports they had links to al-Qaeda.
Somalia has not had an effective national government since 1991.
Last month, a senior UN official told the BBC that Somalia was the worst place in the world for children.