The French police on Tuesday arrested four more men in connection with last year’s killing campaign by Islamist gunman Mohamed Merah, in Toulouse, France. The arrested persons are believed to be friends of the Merahs.

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 shot dead three paratroopers, three Jewish schoolchildren and a Rabbi in Toulouse and the nearby town of Montauban.

His older brother Abdelkader Merah and a friend from Toulouse have already been charged with complicity in the attacks.

French authorities initially portrayed him as “lone wolf” killer who had “radicalised himself”. 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.

The 23 year-old had travelled to Afghanistan and Pakistan for terrorism training, according to investigators.

More In: World | International | News