French PM Manuel Valls has warned that France could face chemical or biological attack from terror groups, as MPs debate extending the state of emergency after the Paris attacks, the BBC reports.

Belgian police are meanwhile raiding six properties in and around Brussels, linked to suspected Paris attackers Bilal Hadfi and Salah Abdeslam.

It remains unclear whether the suspected organiser of the attacks was killed in Wednesday’s raid in Paris.

Friday’s attacks killed 129 people.

Most of the Belgian raids are targeting properties in Jette and Molenbeek connected to Bilal Hadfi, a Frenchman living in Belgium who was one of the seven suicide attackers who died in the attacks in Paris, Belgian broadcaster RTBF reports.

A further raid, in Laeken, is also linked to the Paris attacks.

Mr Valls is addressing the French parliament ahead of a vote to extend the state of emergency by three months.