An image made available by Jihadist media outlet Welayat Homs  shows the Palmyra prison being blown up by Islamic State group jihadists, 10 days after they seized the ancient city from pro-regime forces. The prison was the site of a massacre in 1980 in which hundreds of inmates were killed.  Photograph: AFP/Getty Images

Islamic State group jihadists demolished a notorious government prison in the historic Syrian city of Palmyra on Saturday, as barrel bombs dropped by (...)