Saudi authorities have arrested a yemeni who claimed to have traveled to the Muslim holy city of Mecca to perform umrah pilgrimage on behalf of Queen Elizabeth II.

The man, published a video clip of himself on social media on Monday at the Grand Mosque in Mecca, Islam’s holiest site, where non-Muslims are forbidden.

As seen in the clip, he held up a banner with the inscription: “Umrah for the soul of Queen Elizabeth II, we ask God to accept her in heaven and among the righteous.”

The footage went viral on Saudi social media, with Twitter users calling for the man’s arrest.

Saudi Arabia forbids pilgrims to Mecca from carrying banners or chanting slogans. While it is acceptable to perform umrah on behalf on deceased Muslims, this does not apply to non-Muslims like the Queen, who was supreme governor of the Church of England, the mother church of the worldwide Anglican communion.

Security forces at the Grand Mosque “arrested a resident of Yemeni nationality who appeared in a video clip carrying a banner inside the Grand Mosque, violating the regulations and instructions for umrah”, said a statement carried by state media late on Monday.

“He was arrested, legal measures were taken against him and he was referred to the public prosecution.”