Two bombs exploded outside a local marshal 's building , the Ministry of Health says . The first explosion was minor ; the second went off as a crowd gathered . - A car bomb explodes in front of an Iraqi army checkpoint near Fallujah, Iraq. Authorities who 've been investigating how the brothers became radicalized are interested in a trip Tamerlan Tsarnaev took to Dagestan last year . In Moscow , security forces say a terror plot is foiled .
Two bombs exploded outside a local marshal 's building , the Ministry of Health says . The first explosion was minor ; the second went off as a crowd gathered . - A car bomb explodes in front of an Iraqi army checkpoint near Fallujah, Iraq. In Moscow , security forces say a terror plot is foiled .