The Supreme Court Police Department was not made aware of Justice Antonin Scalia’s death in February 2016 until two hours after he was found unresponsive in his suite at a West Texas ranch, and it took another two hours after the U.S. Marshals Service was notified for deputies to arrive at the ranch, according to new documents.

The documents, obtained and released by a court watchdog group pushing for more transparency at the high court, shed light on how the justices are protected when they travel outside of Washington, D.C. The group says the documents raise concerns about the level of protection they receive when traveling, particularly among the justices who are older in age.