NEW ORLEANS (AP) — Stephen Baldwin is suing Kevin Costner over their investments in a device that BP used to try to clean up the massive Gulf oil spill.

A federal lawsuit filed Wednesday in New Orleans by Baldwin and a friend claims Costner and a business partner duped them out of their shares of an $18 million deal for BP to buy oil-separating centrifuges from a company they formed after the April 20 spill.

BP ordered 32 of the centrifuges, which separate oil from water, and deployed a few of the devices on a barge in June.

Costner's publicist, Arnold Robinson, declined to comment Thursday on the suit's allegations.

The lawsuit seeks unspecified damages.

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