A US state's attorney general is suing BP and others over the Gulf oil spill, claiming the company broke too many promises about accepting responsibility.
Alabama Attorney General Troy King filed two lawsuits in federal court in Montgomery on Thursday.
One is against BP, the other against Transocean and others, but they are identical in wording.
They seek unspecified money in damages plus punitive damages against BP, Transocean and other companies associated with the Deepwater Horizon oil rig.
The rig exploded on April 20, leading to some 200 million gallons of oil to spew into the Gulf of Mexico.
A spokesman for BP said the company does not comment on ongoing litigation.
Meanwhile, BP officials could find out if the firm`s broken oil well in the Gulf of Mexico has been sealed for good on Friday.
An analysis of tests on the well carried out on Thursday should let the US government and BP know if a temporary measure last month had the unexpected effect of permanently plugging the gusher.
Retired Coast Guard Admiral Thad Allen, the US administration's representative on the oil spill, has scheduled a news conference in Schriever, Louisiana, to give an update on the operation.
Admiral Allen said it is possible that the long-discussed final fix, known as a "bottom kill", will not be necessary. After a temporary cap was placed on top of the well last month, heavy drilling mud and cement were pumped in from above in what is called a "static kill".