They were told to by the Ecuadorian President, A different president than the one who granted him asylum in the first place. He is said to have become uncooperative and to have ignored the conditions of his asylum. He had illegally installed surveillance devices, hacked into government computers and been generally obnoxious. Contrary to one cowardly AnonyMOUSE, who said that his supporters "seem to gloss over his alleged sexual crimes" there were no alleged sexual crimes to gloss over, all charges of a sexual crime had been dropped a long time ago. This was a charge of jumping bail, which he did to avoid being extradited to U.S.A, for hacking into government computers, exposing war crimes (among others) of THE U.S military.
Edit...Cowardly AnonyMOUSE who is now and always will be, beneath me, if the Daily Wail is where you get your information from, little wonder you are so misinformed and ignorant. His "alleged rape victim" would jump back on the case, she has a much bigger chance now.