The most senior Muslim preacher in Britain, Anjem Choudary, has been convicted of encouraging support for the Islamic State organization in his lectures and speeches that were broadcast online to his followers. The news was released on Tuesday with the lifting of a reporting ban one month after the conviction by a criminal court in London. Choudary's close aide Mizanur Rahman was convicted as well. The prosecution said the cleric used a social network to swear allegiance to ISIS leader Abu Bakr al-Baghdadi and issue an edict that all Muslims should obey al-Baghdadi and support him. Choudary had previously said that he hoped to "convert Buckingham Palace into a mosque" and praised the terrorists who carried out the 9/11 terrorist attacks in the US. Choudary, a lawyer by training, had never been put on trial before despite his open refusal to denounce terror, even the 2005 attacks in London.