Germany's ministry of justice has made an official request to US authorities for co-operation in arresting 13 people in connection with the alleged CIA-backed kidnapping of a Lebanese-born German citizen.
The European parliament has attacked national governments over CIA rendition flights
The justice ministry's move comes three months after the city's state prosecutor made a formal approach to the German government for help in the notorious Khaled el-Masri case.
A court in the southern German city of Munich had ordered arrest warrants for the CIA suspects at the end of January.
The German government has only acted now because of fears of putting strain on trans-Atlantic relations, according to "Panorama," a news program on Germany's public broadcaster ARD.
The justice ministry confirmed to AFP news agency that it had sent an official request to US authorities for cooperation at the end of last week.
Taken to Afghanistan for interrogation
Khaled el-Masri says he was tortured during his imprisonment in Afghanistan