North Korea threatens to kill South's ex-president Park: KCNA

North Korea threatened today to "impose the death penalty" on the South's former president Park Geun-Hye over an alleged plot to assassinate its leader Kim Jong-Un.

Park had "pushed forward" a supposed plan by Seoul's intelligence services to eliminate the North's leadership, Pyongyang's security ministry and prosecutors said in a statement carried by its official Korean Central News Agency.

"We declare at home and abroad that we will impose death penalty on traitor Park Geun Hye," it said.