Security arrangements at the Stade de France are “not ready” to ensure the safety of spectators at Euro 2016, local politicians have warned, less than three weeks before the tournament.

French anti-terrorism authorities are investigating an attack on a teacher in a Paris suburb by a masked assailant who invoked the Islamic State group.

A four-story apartment building in a north-eastern Paris suburb has partially collapsed after an explosion, killing a child and an elderly person, authorities said.