WestLand National Bank is a financial institution located at Sixth and Hill in Los Angeles. WestLand Financial is a wholly-owned subsidiary with headquarters in Sherman Oaks. The bank's safety-deposit boxes were robbed in an elaborate heist over Labor Day weekend in September of 1991. The break-in consisted of going under the bank using drainage channels and hand digging a tunnel directly under the vault. C4 explosive was then used to blow a hole in the floor of the vault. The objective was to steal the diamonds in the safety-deposit box of Ngo Van Binh. Other safety-deposit boxes were also looted to obscure the real target.