Since Zayn Malik left One Direction in April, we haven’t heard much from the brooding Bradford boy on social media, aside from the heartbreaking day he took “1D” out of his username.

But today Mr Malik caused a Twitter storm when he called one of his former bandmates “bitchy”.

It all started when producer Naughty Boy, who is responsible for Zayn’s latest solo demo, tweeted a picture of the pair in the studio, complete with one of those awful Photobooth filters no one has used since 2007.

Out of the blue 1D’s sassiest member, Louis Tomlinson, threw some major shade with this sub-tweet.

SHOTS FIRED. Naughty Boy, who isn’t one to keep his mouth shut on social media, retaliated with some sassy tweets of his own.

OH. EM. GEE. But there’s more.

Finally, Zayn weighed in on the beef.

*Drops mic*

Rather than rushing to defend their former hero Zayn, 1D fans jumped to Louis’ defence.

And many are committing the ultimate social media offence: Unfollowing and even BLOCKING their former idol.

Yeah, that’ll show him!

The pair are still following one another on Twitter…for now.