Police in a troubled Parisian suburb clashed overnight with about 100 youths in an incident that revived memories of the riots that shook the nation last year. The youths, many masked and wielding baseball bats, hurled projectiles at police and lobbed Molotov cocktails at public buildings, the mayor's office said in a statement. It said the violence was prompted by the arrest Monday afternoon of a suspect in the beating of a bus driver earlier this month. Tension in Montfermeil has remained high since the mayor last month banned teenagers from circulating in groups of more than three, and ordered youths under 16 to be accompanied by an adult in public. A court later overturned the bans after protests from civil liberties groups.