Rashid posted a photograph of George at the school super-imposed with silhouettes of two masked jihad fighters.
"Even the royal family will not be left alone," he wrote in accompanying messages, adding: "School starts early.
" Judge Andrew Lees, in sentencing him, said: "The message was clear -- you were providing the name and address of Prince George's school, an image of Prince George's school and the instruction or threat that Prince George and other members of the royal family should be viewed as potential targets." He added: "You provided what you regarded as inspiration for suitable targets for lone wolf terror attacks." Rashid admitted three counts of engaging in conduct in preparation of terrorist acts, and was given a life sentence for each, and one count of encouraging terrorism.
During the trial prosecutors suggested that Rashid planned to flee to Syria to fight for IS.
He also posted suggestions of which British football stadiums terrorists could strike following the deadly attack outside Besiktas's ground in Turkey, and plotted to inject ice cream with poison.
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