The Sri Lankan delegation at the UN Human Rights Council has said the use of remotely piloted aircraft or armed drones result in killing of civilians and the matter should be "promptly investigated".
"We are deeply concerned about the civilian casualties including women and children resulting from the indiscriminate use of remotely piloted aircraft or armed drones for combat purposes," a statement made at the Human Rights Council said.
"In this context Sri Lanka supports the calls by the Council to ensure that incidents of killing of civilians during the use of remotely piloted aircraft or armed drones are promptly investigated in a transparent and accountable manner and victims are appropriately compensated", it said.
America has used unmanned armed drones several times in Pakistan, Afghanistan, Yemen, Sudan, Iran, Iraq, Libya, Somalia to kill suspected Al-Qaeda and Taliban militants.