Al shabaab stronghold
6 killed in suspected Islamist attack in Kenya - regional governor
A local report said that the attack occurred early in the morning at a public works site.
Islamic State has seized territory in Syria and Iraq, inspiring offshoot groups in the Middle East and Africa.
Witnesses and residents said they heard two loud blasts in quick succession followed by heavy gunfire.
The attack came at 9:30 am as the buses were travelling in Mandera county to Mandera town from the capital.
Critics of the targeted killing programme question whether the strikes create more militants than they kill.
The village chairman, a religious leader & a member of a local security group were shot & killed.
Kenyan troops struck a group of al-Shabaab fighters in the west of the country, near the Kenyan border.
The UN has warned against forcibly repatriating the 350,000 or so Somalis who still live in the camp.
Pentagon spokesman Captain Jeff Davis says no American forces were wounded during the incident.
The Pentagon disclosed the air strike last week but was still assessing then whether Dhoore had been killed.
The strike targeted the militants training camp, a facility about 210 km north of Mogadishu.
Al-Shabaab, which is aligned to al-Qaeda, says it planted the car bomb that killed Muhayadin Mohamed.
The Pentagon said the air strike took place in the vicinity of Saakow, Somalia.
Militant group al-Shabaab claimed responsibility for the attack, which lasted several hours.
The bodies were found after they were abducted from their houses by rebels.
Somali militant group Al-Shabaab said it had shot the plane down.
The group said its mujahideen fighters had killed 40 people despite initial reports of 36.
All the victims were shot in the head, except for four who were beheaded.
The strike is in retaliation to an ambush which killed 28 people on a Nairobi-bound bus.