A new video uploaded to YouTube appears to show a troubling scene from Syria. The video begins with shots and screaming heard in the background and then pans to a man in military dress, who kneels and aims his gun at a boy holding a stone. The boy runs away.

The gunman takes aim. (YouTube/Syrian Revolution 2011)

The video was purportedly taken in Deraa, a city in southwestern Syria where clashes between anti-government protesters and security forces are ongoing. Deraa is also one of three cities being visited by Arab League monitors Thursday, the BBC reports. Some 40 people were killed by security forces on Thursday, according to activists quoted by the BBC.

Watch the video below:

The United Nations reports that more than 5,000 civilians have died in 10 months of unrest.

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