Rapper M.I.A. appears to have upset her old producer, Diplo, after uploading a new track online without allegedly paying the producer for his services.

This isn’t the first time the ‘Paper Planes’ star has faced Diplo’s wrath, with the producer criticising the British-born rapper after they worked together on her third album, ‘Maya’.

At the time, Diplo said M.I.A. didn’t “care” about the album and had lost her “hunger” for music.

His latest criticism comes via a Twitter post, with the producer writing: “M.I.A. please stop leaking the songs you didn’t pay me for.”

Watch M.I.A.'s video for ‘Paper Planes’ here: