Stasi files listed him as an agent , and Mehlis said he was the Libyan spy agency 's main contact at the embassy .
Stasi files led German prosecutor Detlev Mehlis to Musbah Abdulghasem Eter , a Libyan who had worked at the Libyan embassy in East Berlin .
Stasi files listed Detlev Mehlis as an agent , and prosecutor said Detlev Mehlis was the Libyan spy agency 's main contact at the embassy .
Stasi files led German prosecutor Detlev Mehlis to Musbah Abdulghasem Eter , a Libyan who had worked at the Libyan embassy in East Berlin .