The prison is also infamous for its high security. It is considered to be a prison from which the prisoners can never break out of. However, there have been two successful prison breaks in the past: the first one occurred in 1945 when the Viet Minh took the advantage of the defeat of Japan in World War II to attack and free its members who were jailed in an incomplete and ill-guarded Chi Hoa prison. And the second one was the prison break of the infamous Vietnamese robber Phuoc Tam Ngon (Phuoc the eight-finger) in 1995 when he managed to break his fetters and evade the security forces in a prison break which Vietnamese police described as "an unbelievable prison break".