A former leader of the leftist Red Army Faction terrorist organization is refusing to testify at the trial of a one-time comrade.
Christian Klar, 59, told a Stuttgart state court Thursday that he would make no statement concerning the 1977 murder of federal prosecutor Siegfried Buback, the dapd news agency reported.
Klar, who was convicted of involvement in Buback's murder and served 26 years of a life sentence before being released in 2008, had been called to testify in the trial of Verena Becker.
The 59-year-old Becker faces three counts of murder for allegedly playing a leading role in the fatal ambush of Buback, his driver and bodyguard. She denies involvement.
She was charged after prosecutors said new DNA evidence linked Becker to a letter from the RAF sent the day of the attack.