Varg Vikernes

Kristian "Varg" Vikernes (aka Burzum) is back in police custody.

A neo-Nazi linked to Norwegian mass killer Anders Behring Breivik was arrested in southwestern France on Tuesday after his wife bought four rifles, raising suspicions he could turn to violence, the Paris prosecutor's office said.

Kristian Vikernes, who is also a convicted murderer from Norway, had in the past received a copy of a manifesto from Breivik, the office and media reports said.

Officers were searching his home for weapons and explosives, a police source told Reuters.

Far-right militant Breivik killed 77 people in a bombing in central Oslo and a shooting spree on a nearby island in July 2011. He was imprisoned for the maximum 21-year term last year.

Breivik sent a copy of a manifesto setting out his ideology to Vikernes, an official at the prosecutor's office said.

"That was at the origin of the investigation ... There were several suspicions that made the services fear he could possibly carry out a violent act," the official said.

The "Norwegian neo-Nazi" had been arrested in Correze, the office told Reuters.

Vikernes' wife had a legal firearms permit when she bought the four rifles, the official said.

On his website, Vikernes discusses Breivik's manifesto, but also criticizes him for killing innocent Norwegians. -[Reuters]

Of course, Varg Vikernes spent much of the past two decades in jail for the murder of Oystein "Euronymous" Arseth, founding member of Mayhem.