North Korea said on Wednesday it has issued a standing order for the execution of former South Korean President Park Geun-hye and her spy chief for what it said was a plot to assassinate its leader, and it demanded that the South hand the pair over.

The North’s official KCNA said “revelation showed” Park had masterminded a plot to execute its “supreme leadership” in 2015 and it was imposing the “death penalty on traitor Park Geun-hye” and her spy chief, Lee Byung-ho.

KCNA did not disclose the source of the “revelation,” but a Japanese newspaper reported this week that Park in 2015 approved a plan to overturn the North Korean regime of leader Kim Jong Un.

Park was ousted in March over a corruption scandal and is in detention in South Korea while on trial.