NEW : Witness : The mood was silent and somber as the victims ' names were read out at a rally . Bullet holes pock the walls of the apartment where Merah holed up , and nearby cars . A mother filed a complaint against Merah in 2010 , saying he threatened her children . Rival candidate Francois Hollande , appearing at a rally Thursday night , said questions will have to be asked about the Merah case , French media reported . He denied it then but later admitted to having killed three people during an attack on his ex-girlfriend's house.
NEW : Witness : The mood was silent and somber as the victims ' names were read out at a rally . Bullet holes pock the walls of the apartment where Merah holed up , and nearby cars . A mother filed a complaint against Merah in 2010 , saying he threatened her children . He denied it then but later admitted to having killed three people during an attack on his ex-girlfriend's house.