Tens of millions of dollars in cash was reportedly stolen from a Los Angeles storage facilitys vault in a brazen Easter Sunday theft, which is being called one of the greatest heists in the citys history.

As much as $30 million was discovered missing Monday morning after workers opened the vault, according to reports from the Los Angeles Times and other outlets , citing sources familiar with the investigation.

The burglars reportedly accessed the vault from the buildings roof the night before and somehow managed to avoid triggering its alarm system.