Yemen's official security committee says people targeted in an airstrike in central city were al-Qaida militants including those who masterminded attacks on vital institutions, police and army.

The Friday statement by the Supreme Security Committee, headed by Yemen's president, was referring Thursday's drone strike that was believed to have targeted a wedding party in the central city of Radda, killing 13 people.

The committee warned citizens from providing "aid or shelter to any of the terrorist elements" and urged them to notify security authorities about them.

In Radda, witnesses say the families of the dead held a protest in front of local city council demanding an investigation and holding the government responsible for the killings.