Using a law originally enacted to combat the Mafia, attorneys are filing lawsuits accusing BP PLC and Transocean Ltd. of committing a longterm series of crimes by concealing flaws in deepwater drilling plans and lacking safeguards to contain a catastrophic Gulf of Mexico spill.

BP has been named in at least three lawsuits brought under the federal law known as RICO, which stands for Racketeering Influenced and Corrupt Organizations. Transocean, which leased the ill-fated Deepwater Horizon drilling rig to BP, has been named in two lawsuits filed in Louisiana and Florida.

The lawsuits accuse both companies of committing wire and mail fraud over a number of years by filing false documents with the U.S. government, and by misleading investors through other documents and falsehoods. They also claim both companies are guilty of bribery because they are part of an overall oil and gas industry effort to "infiltrate" federal regulators by providing favors such as alcohol and drugs, sex, golf and ski trips, concert and sports tickets, and more.