Euronews.com reports that the police custody of far-right Norwegian black metal star Kristian ‘Varg’ Vikernes and his French wife Marie Cachet arrested on Tuesday in southwestern France has been extended by 24 hours, judiciary sources told news agency AFP.

In French anti-terrorism investigations, suspects can remain in custody for up to 96 hours, including 72 hours without a lawyer.

Vikernes, 40, and his wife, a 25 year-old French national, were arrested by officers from the Central Directorate of Interior Intelligence at their house in Salon-la-Tour, France, and taken to custody at a nearby police station.

On Wednesday morning, Norwegian news website NRK reports there is no longer a police presence at the house Vikernes and Cachet share.

The Home Office stated on Tuesday that Vikernes, “with close tie to the neo-nazi movement” was “likely to carry a large-scale terror act” and thus “constituted a potential menace.” To justify the arrest, they also mentioned “violent speech intercepted on the web”.

French news website Le Nouvel Obs reports that the Central Directorate of Interior Intelligence decided to act after a blog post Vikernes wrote on July 13 commenting on the Bretigny train crash, which had taken place south of Paris the day before.

In the blog post entitled ‘Heros’ and illustrated with anti-Semitic cartoons, Vikernes attacks “The ‘French’ president, the (sic) Jew Mr. Hollande,”, the media and “criminal non-European scum “ making up “the gang of ‘youths’ standing nearby ready to rob the passengers when [the train derailed]”.

In the first hours after the train crash, reports of looting and attacks on victims and first responders were published before being dismissed by local authorities and first responders on the ground.

Vikernes then urged the “Europeans” to “revolt” and calls to action: “it must stop; we must take actions to end this: Before it is too late.”

Read more at Euronews.com.