Diplo has launched a scathing attack on MIA, accusing the singer and rapper of "glamorising terrorism".
The star's former producer, who is also her ex-boyfriend, blamed MIA's political rhetoric for the failure of her last album, Maya.
The pair found mainstream succcess with the track Paper Planes, which made an international star of MIA after featuring on soundtracks for Pineapple Express and Slumdog Millionaire, but broke up soon after.
Diplo, aka Wesley Pentz, has explained what happened. He told WWD: "She got famous after Paper Planes. She had already thrown in the towel when that record came out. Before that she was like, 'I'm retiring. I'm going to marry this guy, fuck it.' Then Paper Planes blew up and she was like: 'Oh shit, I gotta take advantage of this. I'm actually an artist now.'"
But 2010's follow-up album Maya did not build on her success, and was overshadowed by an article by New York Times writer Lynn Hirschberg, which suggested the supposed radical was a truffle-fry eating fake.
Of the album, packed with references to Sri Lankan terrorists, Diplo said: "Maya left her open for attacks. She's not an easy artist to criticise because she's very left-leaning, she's progressive, she's a woman. But when it comes to die-hard, facts-on-the-ground politics, she's at zero. She's nothing. I told her at the beginning of the third record, do not bring politics into this ... You just can't glamorise terrorism, it's not cool ... you can't hide behind that shit. But she totally did ... And Lynn Hirschberg just ate it up. If she didn't, the critics would have ate her up anyway because the record wasn't good."
Diplo recently assisted with the production on Beyoncé's single Run the World (Girls).
