The gun that actor Alec Baldwin fired, accidentally killing one and injuring another, contained a real bullet, a new report says.

The Local 44 chapter of the International Alliance of Theatrical Stage Employees, which covers prop masters, sent an email to its members on Friday revealing the gun Baldwin used when accidentally killing cinematographer Halyna Hutchins and wounding director Joel Souza on Thursday contained “a live round.” The production’s propmaster was seemingly not a member of the Local 44, according to Indiewire.