Federal appellate judges seemed skeptical Wednesday of the U.S. government’s continued holding of My Pillow CEO Mike Lindell’s cellphone after the FBI seized it during a criminal investigation reportedly related to the 2020 election.

During oral arguments, Judge James Loken of the U.S. Circuit Court of Appeals for the Eighth Circuit pressed the government on whether there’s a limit on how long the FBI can keep the phone and what investigators can view on it. However, he also appeared wary of Lindell’s efforts to block the probe by preventing the government from accessing information already taken from the device.