Washington, however, has no doubt that Serbian forces carried out the killings, he said.

Since 2007 the armed forces have carried out a campaign against ethnic Tuareg based rebels in the north of the country.

The command here did not say which country's forces carried out the attack.

The force carried them out through the window, and for a panicky moment they trod thin air.

In recent months, it has become increasingly common for the Palestinian factions to join forces to carry out attacks.

American forces have periodically carried out raids in the area.

Israeli forces carried out two attacks in Lebanon during March.

British special forces have also carried out reconnaissance and other missions inside Afghanistan.

Iraqi forces also recently carried out an exercise in which they loaded chemical munitions on aircraft, officials said.

American forces have carried out several offensive sweeps through the area in recent months, but to no avail.