France's Prime Minister has dismissed right wing calls to build retention centre for radicalized Islamists, an idea that appeared to be backed by some French Muslim leaders.

Rightwing French lawmakers had called for "retention centres" for radical Islamists after the brutal murder of a policeman and his partner at their home on Monday night by French jihadist Larisso Abballa.

Several right wing politicians want to create centres, dubbed "French Guantanamos", akin to those where individuals with dangerous mental health problems can be detained.

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