From 2009 to 2010 , Saïd Kouachi visited Yemen on a student visa to study at the San ' a Institute for the Arabic Language . There , according to a Yemeni reporter who interviewed Saïd , he met and befriended Umar Farouk Abdulmutallab , the perpetrator of the attempted bombing of Northwest Airlines Flight 253 later in 2009 . Also according to the reporter , the two shared an apartment for " one or two weeks "
Northwest Airlines Flight 253
Northwest Airlines Flight 253
Charlie Hebdo shooting