Cargo ship on fire in Miami River

MIAMI, July 8 (UPI) -- A fire on a cargo ship in the Miami River flared up again Monday sending massive amounts of smoke over the Florida city.

More than 35 Miami-Dade Fire Rescue units responded to the blaze which started Saturday and seemingly under control, reignited, The Miami Herald reported Tuesday.

''Enough air got in to go from smoldering into a flaming environment,'' Lt. Elkin Sierra, a Miami-Dade Fire Rescue spokesman, told the Herald. "It's an active fire.''

''We had the bulk of the fire out,'' he said. "We knew it was hot. We knew it was smoldering. We were doing overhaul where you search for hidden fires and, during that, the fire lit up.''

The cause of the fire on the Atlantic, a 200-foot freighter carrying cars, mattresses and bicycles destined for Haiti, remained undetermined, the Herald said.