New Delhi, May 26 -- British energy giant BP has abruptly removed chairman Albert Manifold less than a year after appointing him, citing serious concerns related to governance standards, oversight and conduct.

The unexpected move marks the latest leadership upheaval at BP as the company struggles with boardroom controversies, strategic shifts and mounting shareholder pressure.

BP announced on Tuesday (May 26) that its board had unanimously decided Manifold should step down "with immediate effect" as chair and director.

In a statement, the company said the decision followed: "Serious concerns raised to the board related to important governance standards, oversight and conduct."

The company did not disclose specific details about the al...