Zayn Malik and Louis Tomlinson are fighting on Twitter

Zayn Malik, Louis Tomlinson and Naughty Boy are having a row on Twitter.

It seemed to start when Naughty Boy posted a picture of himself and Zayn along with the caption, "Replace this" - which Zayn then retweeted.

Louis then wrote: "Remember when you were 12 and you used to think those Mac filters for your pictures were cool haha ! Some people still do HA!"

Zayn then replied directly to Louis, saying: "Remember when you had a life..?"

Naughty Boy, who has been working with Zayn, also had his own back-and-forth row with Louis on the social network.

Naughty Boy had first tweeted: "Replace this"

Louis Tomlinson tweeted: "Remember when you were 12 and you used to think those Mac filters for your pictures were cool haha ! Some people still do HA!"

Naughty Boy tweeted: "@Louis_Tomlinson and some people can't even sing.. but who's complaining when there's auto tune eh."

Louis Tomlinson tweeted: "@NaughtyBoyMusic Jesus forgot you were such an in demand producer .... How does it feel to be riding on the back of someone else's career?"

Zayn Malik tweeted: "@Louis_Tomlinson remember when you had a life and stopped making bitchy comments about mine?"

Naughty Boy tweeted: "@Louis_Tomlinson Yeah how does it feel mate? You've been doing that for the last five years... I've got Emeli Sande and Sam smith on my CV

Louis Tomlinson tweeted: "@NaughtyBoyMusic good for you , well done !! I think we've done alright in terms of sales and I've happened to write on most. Keep trying!"

Naughty Boy then retweeted a more cryptic post made by Emeli Sande.

Emeli Sande tweeted: "Doing my party research. Nothing feels like the complete truth. So ...@NaughtyBoyMusic for PM ✖️#averypublicenquiry"

But after a few hours things seemed to calm down... a bit.

Zayn Malik tweeted: Don't know why I'm being attacked for defending myself , people got it twisted! I love my fans ?! Every single one of you x

Naughty Boy is said to be working on new material with Zayn, who quit One Direction in March.

The music producer has already upset One Direction fans, by sharing a video online which seemed to suggest that he had "saved" Zayn from the band.

Louis accused Naughty Boy of being "inconsiderate" to fans after he posted the link.

A song featuring Zayn without the rest of One Direction was also taken down, less than a day after it was shared on Soundcloud.

Naughty Boy tweeted a link to the track, with the words "let the music do the talking" - less than a week after Zayn revealed he was leaving One Direction.

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