This photo is actually three years old and not from Friday's attack
How do you know if the photographs and video footage that you see on social media after an attack are real? In the absence of concrete facts, many people – and news organisations – turn to social media for information. The deadly attack on the al-Rawda mosque in Egypt's North Sinai province, which killed at least 235 people, was no different. In its immediate aftermath, news site Al-Araby shared a dramatic image of crowds outside a smoking building. The headline read: “Sinai: 200 people killed and wounded in the bombing of a mosque”. The ambulance shown is indeed Egyptian. However, this image does not show the 24 November attack in Sinai. For more click here: http://www.bbc.co.uk/news/world-middle-east-42115748