A Syrian refugee in the camp, Abu Nawras, said police fired tear gas to disperse the protesters who were demanding improved conditions, better food and education for their children

Updated 11:40 p.m. ET

(CBS/AP) BEIRUT — An activist group and a Syrian official say a roadside bomb went off near a school building in Damascus, but that is where the government’s account and that of Syria’s rebels diverges.

Syrian security officials tell CBS News’ George Baghdadi that four people were injured in the explosion. Baghdadi says the school building itself appeared undamaged from the outside. The school, Syrian officials said, 평창출장안마 is designated for children who have lost their parents in the country’s now 18-month-old crisis.

The rebel group which has taken responsibility for the attack, however, claimed Tuesday that the school was being used by the Syrian regime as an intelligence headquarters. A rebel from the group told al Jazeera the bomb targeted a meeting between Syrian military officials and pro-government militias, known as Shabiha. He said there were many deaths.

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Neither the government’s story nor the rebel’s could be independently verified due to the Syrian regime’s strict restrictions on journalists in the country.

An amateur video posted online showed smoke billowing from several spots in an area near a major road. The narrator said: “A series of explosions shake the capital Damascus.” The authenticity of the video could not be independently confirmed.

The Britain-based Syrian Observatory for Human Rights told the Associated Press that several blasts took place along the highway leading to the Damascus International Airport and wounded 20 people, some of them seriously. The organization said most of the wounded were members of the military.