The Kouachi brothers were monitored by French agencies because of their histories , L'Express says . The surveillance of his brother Cherif stopped earlier -- at the end of 2013 . A source close to the investigation told AFP that police had found a Kalashnikov in one of the brothers' homes and another at an address linked to them in Saint-Denis, near Paris.
The Kouachi brothers were monitored by French agencies because of their histories , L'Express says . A source close to the investigation told AFP that police had found a Kalashnikov in one of the brothers' homes and another at an address linked to them in Saint-Denis, near Paris.