As investigators hunt for leads in Europe¡¯s worst terror attack in a decade, the Paris prosecutor laid out how three teams of assailants managed to kill at least 129 people in and around one of the world¡¯s most heavily policed capitals.

Suicide bombers and gunmen linked to the Islamic State group ¡°were behind how the terrorist acts unfolded,¡± Francois Molins said in a televised press conference late Saturday.

At least one perpetrator was a French citizen, and police found a Syrian passport beside another, who blew himself up outside the Stade de France during a France-Germany soccer match, Molins said. In Belgium at least three people have been arrested in connection with the deadly attacks, local prosecutors said.