A Prince George’s County Circuit Court judge declared a mistrial Friday in the case of a police narcotics detective accused of stealing and selling guns that he had seized from criminals, authorities said.

The mistrial was declared after jurors deliberated all day Thursday and into the afternoon on Friday without reaching a unanimous verdict, said Nancy Lineman, a spokeswoman for the Prince George’s County State’s Attorney’s Office. She said prosecutors were weighing whether to retry Juan Carter, the Prince George’s narcotics detective who was on trial.

“The likelihood is pretty high that we will,” Lineman said.

Prosecutors had accused Carter of stealing and selling the very shotguns, machine guns and handguns he was assigned to take away from criminals when he was assigned to a state-run task force focused on gun crimes. His defense attorneys denied those allegations, saying he was responsible only for the same paperwork errors that many of his fellow task force members made.

Carter remains suspended without pay from the police department while his legal proceedings are ongoing, authorities have said.