In April 2015, the Hatton Garden Safe Deposit Company, an underground safe deposit facility in London's Hatton Garden area, was burgled. The total stolen may have a value of up to £200 million, the incident has been called the "largest burglary in English legal history." The heist was planned and carried out by four elderly men who were experienced thieves, all of whom pleaded guilty and received prison sentences in March 2016. Four other men were also tried on suspicion of involvement; three were found guilty and sent to prison, while the fourth was cleared.