'Sorry, but we didn't steal' Skrillex posts about Justin Bieber copyright suit

Justin Bieber and Skrillex are hitting back against copyright infringement claims related to their multi-platinum song Sorry.

A suit filed in Nashville federal court by singer-songwriter Casey Dienel, who performs as White Hinterland,claims that Sorryuses a vocal riff from her song Ring the Bell,which was released on her album Babyin 2014.

• Too late now to say sorry? Justin Bieber, Skrillex sued for copyright infringement

Dienel's lawsuit said her attorney sent a letter to Bieber's lawyer and manager about the alleged infringement but they didn't respond.

Skrillex has now posted a short video on Twitter using an acapella version of Sorryfrom the song's writing sessions to demonstrate how the opening to the hit track was produced.

He also wrote "SORRY but we didn't steal this" along with Bieber's Twitter handle and the prayer hands emoji in the post.

Bieber retweeted Skrillex's tweet accompanied by the hashtags#wedontsteal and #sorry, along with a smiley face.