Grimes’ New York City set was cut short earlier in the week when she walked off stage during “World Princess part II” while opening for Florence + The Machine.

“We just had a really disturbing thing happen to us today, so sorry if my voice is shaking, it’s just kind of a fucked day,”  she said to the crowd while introducing the song.

There is currently no official statement from Grimes or her representative other than a now-deleted tweet from Grimes stating “I will explain what happened at Barclays once I can safely and legally do so.”