BP's chief executive Lord Browne, has been told to testify over the firm's Texas refinery explosion that killed 15 and injured hundreds more in 2005.
A judge has ruled that plaintiffs can seek a deposition from Lord Browne in their case against the firm.
A BP spokesperson said: "We respect the judge's decision and are weighing the options."
The firm recently announced a complete review of its global operations following last year's Texas blast.
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BP Chief Executive To Testify Over Explosion
BP's chief executive has been told to testify over the firm's Texas refinery explosion