BERLIN (AP) — An Austrian far-right activist who received a donation from and exchanged emails with the suspected New Zealand mosque gunman says U.S. authorities have canceled his permit to travel to the United States without a visa.

Martin Sellner said on social media Thursday that an ESTA permit he'd used to visit his American fiancee was revoked, days after Austrian police raided their home in Vienna.

ESTA, which stands for Electronic System for Travel Authorization, allows citizens of some countries access to a visa waiver program that facilitates but doesn't guarantee permission to enter the United States.

The Austrian government said Wednesday it's considering dissolving Sellner's Identitarian Movement of Austria, which espouses anti-immigrant and anti-Muslim ideas shared by the suspected Christchurch attacker Brenton Tarrant.

Sellner denies involvement in the attack.