Although Pahoran and Chief Captain Moroni had regained control over Zarahemla from the king-men, and undoubtedly believed that they had solidified that city as a Nephite stronghold, the events surrounding the transfer of power after Pahoran’s death suggest that there was still discord in the city. Coriantumr’s invasion takes advantage of that discord.
Mormon records that the division that existed after Pacumeni’s ascension to the judgment seat, and Paanchi’s execution, left the city less protected than it might have been. Therefore, Coriantumr is able to enter the land and take over the main city. In doing so, Pacumeni was killed. The transfer of power is even more fragile.