Zayn Malik has seemingly launched an offensive against Naughty Boy on Twitter.

The singer had been working with the producer whilst he was still in One Direction.

They continued their relationship after Malik quit the band in March, with a demo recently appearing online.

Naughty Boy has regularly spoken to the press about the progress of Malik's solo career.

However, the former One Direction man seems to have turned his back on the 'La La La' producer, saying on Twitter today (July 13):

"@NaughtyBoyMusic you fat joke stop pretending we're friends no one knows you.

"Someone learned how to upload a video...maybe now he should learn how to use logic ha you ain't sh*t but a faker."

Naughty Boy's recent tweets suggested disharmony, with the Brit typing:

"This "music" business teaches you the tricks but never the truth. You know who you are."

At the time of writing, it is unclear if the words are from Malik or whether his account was hacked.

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