GhostSec, a hacktivist off-shoot of Anonymous, has claimed to have followed a chain of transactions and found a Bitcoin wallet containing $3 million which they say is linked to the self-proclaimed Islamic State terror group and Friday’s Paris attacks.

It had previously been reported by Deutsche Welle that the extremist group has been experimenting with currency such as gold and Bitcoin to stay off the radar. One wallet, believed to be in possession of IS affiliates, had received $23 million in Bitcoin in September.

The day after the Paris attack one of the hackers was asked by News BTC whether Ghost Security Group noticed any abnormal activity from IS personnel or if there were any alarming signals.

“Yes, we did detect several indicators of an attack impending and are currently in the process of collecting valuable evidence for United States government officials. I cannot go into more detail at the moment on current investigations,” the GhostSec representative told News BTC.

The group has stated that they believe Bitcoin to be IS’ primary form of cryptocurrency and located several websites on deep web that the terror group was using to obtain donations. GhostSec claims to have had several of those websites shut down.

IS has also recently minted and released its own currency, called the "gold dinar."

Following the massacre in the French capital, in which 129 people were killed, Anonymous also launched #opParis, vowing to hunt down the social media accounts of all IS members, and warned them to prepare for cyber attacks.

“Anonymous from all over the world will hunt you down. Expect massive cyber attacks. War is declared. Get prepared," the loosely knit hacktivist group warned in French.

"You should know that we will find you, and we will not let you go. We will launch the biggest operation ever against you," the Anonymous spokesperson added. "The French people are stronger than you and will come out of this atrocity even stronger."

A list of 1,000 alleged IS Twitter accounts has already been published by the group.