paris eight suspect place formal investigation france follow arrest joint counter-terrorism raid swiss authorities judicial source say saturday suspect among 10 detain nov. french swiss police result four-month investigation group young islamists think radicalize swiss imam among detain nl5n1nd33t follow arrest french interior minister gerard collomb tell french lawmakers group believe plan attack yet choose specific target seven eight suspect place formal investigation remand custody judicial source say ninth person arrest french swoop release without charge suspect hold franco-swiss swoop face terrorism charge