AP Spanish police arrest new bombing suspect

After the Leganes suicide blast, Spanish officials said they believed the core members of the cell responsible for the attacks were either dead or in jail. More recently, however, they have acknowledged that several key suspects remain at large.

　このテロにはどうも謎がありそうだ。
　コロンボ風に考えれば、一番利するやつが怪しい。とすると、フランス？