"Since he had not complied with the current oil policy, he was removed from his post at the request of the president," Cano said. Cano said no vote had been formally held on the decision.
It is not immediately clear who will take over the state-owned oil company.
Rosero, a retired military officer, was named head of Petroecuador in January by Gutierrez but since then has clashed with Energy Minister Carlos Arboleda on several issues including labor contracts and how best to deal with the country's declining oil fields.
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