(Bloomberg) -- The Norwegian Gaming Authority has banned transactions with six Malta-based gambling companies, which it says are operating “illegally” within its territory, the Times of Malta reports.

A spokesman for the watchdog told the newspaper it had ordered banks in its jurisdiction to block payments to and from accounts identified as being used for processing gambling transactions.

Norwegian banks aren’t allowed to transfer money to accounts held by the six companies, which, according to the authority, are marketing themselves in Norway and offering online casino and betting services to players without its permission.

Betsson, Co-Gaming Ltd., L&L Europe Players Ltd. and the Gaming Innovation Group were sent warning letters in November about their “illegal” Norwegian operations. Warnings were also sent to the Kindred Group and Lucky Dino Gaming Ltd. this month, the newspaper said.

The gambling companies named in the report didn’t immediately respond to emails requesting comment.

To contact the reporter on this story: Love Liman in Stockholm at jliman1@bloomberg.net

To contact the editors responsible for this story: Ven Ram at vram1@bloomberg.net, Christopher Elser, Amanda Jordan

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