A Syrian army helicopter dropped two barrel bombs on a camp for people displaced by the country's three-and-a-half-year war, residents of the camp said Wednesday.

According to the Britain based monitoring group, Syrian Observatory for Human Rights, 10 civilians were killed in the bombing at the Abedin camp, in the northern province of Idlib.

The camp accommodates Syrians who have fled from the fighting in the neighboring Hama Province.

A video posted on YouTube showed dead bodies of woman and children. People were also seen trying to help the injured.

"It's a massacre of refugees. Let the whole world see this, they are displaced people. Look at them, they are civilians, displaced civilians. They fled the bombardment," a voice off camera said, reports Reuters.

However, a man in another video said that nearly 76 people died in the bombing.

The United States said that it was appalled by the reports of the bombing, though it could not verify the particulars.

State department spokeswoman Jen Psaki termed the bombings of the camp as "barbaric".

Meanwhile, the director of the United Nations' humanitarian operations, John Ging, has cautioned that some of the neighboring countries of Syria are at a breaking point due to the predicament of accommodating the refugees as well as being responsible to their own citizens, reports the Associated Press.

Ging said refugees will flock to Lebanon, Turkey and Jordan for many years and called on the international community for more funds to help in dealing with the crisis.

Ging's comments come in the wake of Jordan and Lebanon raising an alarm at an international conference in Berlin that the arrival of refuges was taking a toll on their resources. It also poses a threat to their political stability, the countries told the conference.