French police on Tuesday arrested four more men in connection with last year's killing campaign by Islamist gunman Mohammed Merah, French radio reported.
Some of the suspects were arrested in Merah's hometown of Toulouse, where he killed four of his seven victims in March 2012 before being shot dead by police in a raid.
The others were arrested in Paris, France Info said.
Merah, a 23-year-old radical Muslim, shot dead three French paratroopers, three Jewish schoolchildren and a rabbi in Toulouse and the nearby town of Montauban. He was shot dead on March 22 during a standoff with police.
The 23-year-old had travelled to Afghanistan and Pakistan for terrorism training, according to investigators. French authorities had initially portrayed him as a "lone wolf" killer who had "radicalized himself," but that theory has since been thrown into doubt by documents showing he was in contact with people throughout the Middle East, the Gulf and North Africa.
His older brother Abdelkader Merah and a friend from Toulouse have already been charged with complicity in the attacks.