A man in Croydon, England, was arrested for "incitement to racial hatred"—a crime under UK law—after tweeting about accosting a Muslim woman in the street. He demanded an explanation from her for the Brussels attacks, and her response didn't satisfy him. So he took to Twitter to rant about it.

According to The Guardian:

He is understood to be Matthew Doyle, a partner at a south London-based talent and PR agency, who tweeted earlier in the day: “I confronted a Muslim women [sic] yesterday in croydon. I asked her to explain Brussels. She said “Nothing to do with me” a mealy mouthed reply.”

Doyle is not the first Brit to be arrested for this kind of crime on social media. After people reacted negatively to his first tweet, Doyle continued his tirade by tweeting, "Who cares if I insulted some towelhead ?? Really." Before he was arrested, he tweeted, "Thanks all you tweeters for proving I can still do PR."

It's not clear whether his tweets were a publicity stunt, but he did say later that his comments were "intended as a joke." Doyle claimed that he'd actually spoken very politely to the woman, and that if he were xenophobic he "would not live in London."

Doyle's tweets have now been deleted, and he has not yet been charged.

The UK's laws against inciting racial hatred were created specifically to deal with anti-Muslim violence after a group of men killed an off-duty soldier in London, and one of the attackers said the murder was "revenge" for British military interventions in Muslim countries. Law enforcement found that Islamophobia was spreading on social media like Facebook and Twitter, provoking violent attacks on Muslims. Police then focused their efforts on quelling racial hatred online.