MEXICO CITY, July 31 (Xinhua) -- A fire that broke out Friday morning at a refinery of Mexico's state-owned oil company Petroleos Mexicanos (Pemex) has been brought under control, said the company.

    The fire was caused by a gas leakage in the "Lazaro Cardenas" refinery in Mexico's east-central Veracruz state, Pemex reported.

    Staffs were swiftly evacuated after the fire erupted around 5:50 a.m. (1050 GMT).

    Pemex said the fire was brought under control immediately, without causing damages to facilities or the environment.