Coast Guard commander Raymundo Cruz said the oil spill was discovered on the shorelines of Barangays San Raphael, Baclaran and Carirahan here.
Local officials suspect that two cargo vessels M/V Lake Buhi and M/V Tara owned by Cumrose Shipping, coal supplier of the National Power Corp. (Napocor), could be behind the oil spill.
Napocor operates a coal-fired power plant in Calaca. Arnell Ozaeta