The Dixie Chicks are being sued by their record label, Sony Music Entertainment, for breach of contract in a suit filed in a Manhattan federal court this week.

The Chicks claim that Sony has underpaid them by withholding royalties, but Sony says that those claims are false.

Talks between the group and Sony broke down last week, with the Chicks announcing that they were leaving the label.

Now, Sony is suing them for breach of contract, stating that they are still under contract to cut four more albums and asking the court to bar them from signing with a different label.

In the suit, Sony states: "The purported termination is based upon entirely trumped up and baseless claims."