When Julian Assange learned of his imminent arrest at the Ecuadorian Embassy in London Thursday, he wasn't even allowed to go back to his room, because authorities feared he would hit a reported "panic button" with potentially disastrous effects, Ecuadorian Foreign Minister Jose Valencia said.The WikiLeaks founder's arrest Thursday was sudden:The details were revealed during remarks by Valencia to the press on Thursday. Assange is charged with conspiracy to help former US Army intelligence analyst Chelsea Manning break into a computer and steal classified documents and could face five years in prison. WikiLeaks published many of the documents Manning delivered in 2010, including the "Cablegate" diplomatic communications and "Collateral Murder" video, the latter of which showed US soldiers committing war crimes in Iraq.Moreno said Thursday that Assange was a "spoiled brat." He had previously fumed about Assange's alleged involvement in leaking documents connecting Moreno and figures in his family and government to various corruption schemes. Assange and WikiLeaks have denied having any involvement in the leak.