Defence lawyers on Monday sought to overturn the conviction of Osama bin Laden’s personal secretary for his role in the 1998 bombings of two US Embassies in Africa. In appeals court arguments, lawyers for Wadih El-Hage argued the government’s evidence and conviction against El-Hage was unfair. El-Hage, who is serving a sentence of life in prison, was convicted with three others in October 2001 of conspiracy to kill Americans, conspiracy to commit murder, conspiracy to destroy buildings and perjury. Defence lawyers told the US Second Circuit federal appeals court panel that the government’s case had relied on weak “circumstantial evidence” that linked El-Hage to Al Qaeda figures and meetings, but not directly to the bombings.