As members of the UK’s largest opposition party gathered in Liverpool for their party conference—probably their last before the UK holds a general election—a potentially explosive audio file started circulating on X, formerly known as Twitter.

The 25-second recording was posted by an X account with the handle “@Leo_Hutz” that was set up in January 2023. In the clip, Sir Keir Starmer, the Labour Party leader, is apparently heard swearing repeatedly at a staffer. “I have obtained audio of Keir Starmer verbally abusing his staffers at [the Labour Party] conference,” the X account posted. “This disgusting bully is about to become our next PM.”

It’s unclear whether the audio recording is