Updated

Austrian police investigating a failed cyberattack on Vienna's airport say they are looking into the authenticity of a claim of responsibility from a Turkish nationalist group.

The hacker group "Aslan Neferler Tim" or "Lion Soldiers Team" says it launched last week's attack in response to the "racism" of airport authorities.

The group's tweet was alluding to the refusal of officials to issue a group of Turkish nationals emergency visas that would have allowed them to leave the airport and overnight in a hotel after their flight was grounded for technical reasons

The hackers describe themselves as responding to attacks against "Islam and the (Turkish) nation." Austria wants the EU to break off membership negotiations with Turkey.

Police on Wednesday declined to give details beyond saying they were investigating the claim.