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In 1833, his son Minh Mạng was faced with a rebellion led by Lê Văn Khôi, which started after the tomb of Khôi's father Lê Văn Duyệt was desecrated by imperial officials. The rebels took control of the citadel and the revolt continued until the imperial forces took control of the citadel in 1835. Following the capture of the citadel, Minh Mạng ordered its razing and replacement with a smaller square stone-built structure, that was more vulnerable to attacks. On February 17, 1859, the citadel was captured during the French invasion after less than a day of battle and significant amounts of military supplies were seized. Realising that they did not have the capacity to hold the fort against Vietnamese attempts to recapture it, the French razed it with explosives, before withdrawing their troops.