Freytes , who filed an iReport for CNN . `` The explosion blew out windows here in Old San Juan , '' he said . `` It 's still burning outrageously . '' Others woke up Friday morning to an extremely unusual sight . `` I did n't expect to see a mushroom cloud from my house , '' said Justin Gehrke , a U.S. Army civilian employee who also filed an iReport . Fortuno said he declared a state of emergency for the area so Puerto Rico can get aid from the Federal Emergency Management Agency . The storage and refinery complex sits near San Juan 's bay , and Fortuno said officials are working to protect the water from being affected . `` We have serious worries that the bay or other bodies of water could be contaminated , '' he said . Caribbean Petroleum 's Web site says the complex has storage facilities for gasoline and gasoline-related products . `` We have been monitoring the water visually and we have installed preventive pads and other material to contain a spill , '' said Pedro Nieves , chairman of the Puerto Rico Environmental Quality Board . `` No
-LRB- CNN -RRB- -- A raging blaze at a fuel storage complex in Puerto Rico lit up the night sky Friday near San Juan as firefighters battled to keep it from spreading further . iReporter Maria Marquez photographed the flames early Friday from the 17th floor of her San Juan condominium . Fifteen of the 40 tanks at the Caribbean Petroleum Corp. facility in the city of Bayamon were ablaze more than 19 hours after an explosion of unknown origin rocked the complex , Gov. Luis Fortuno said at an evening news conference . The governor had put the tally at 11 a few hours earlier . `` I do n't think there 's ever been a fire like this in Puerto Rico , '' Fire Lt. Jose Atorre told CNN affiliate WLII-TV . The fire started shortly after midnight , when at least one fuel tank exploded . Residents described a surreal scene after the blast woke them from their sleep and shattered windows miles away . `` I was in bed and all of a sudden heard this really horrible sound , so I ran upstairs and thought the whole town had blown up , '' said Teo