An upside-down American flag was displayed outside the home of Supreme Court Justice Samuel Alito in January 2021, The New York Times reports.

A photo obtained and published by the newspaper shows the flag flying on Jan. 17, 2021, days after Trump supporters stormed the U.S. Capitol on Jan. 6, 2021. Dozens of the rioters were carrying similarly inverted flags and chanting slogans like “Stop the Steal.”

The report could raise concerns about Alito’s impartiality as the court considers two major cases related to the attack, including charges faced by the rioters and whether Trump has immunity from prosecution on election interference charges.