A massive oil spill in the Baltimore Harbor that began Wednesday has now dumped 5,000 gallons of diesel fuel into the harbor, more than doubling the amount initially reported.

At least 2,000 gallons of oil have spilled into the Baltimore Harbor as cleanup efforts are currently underway, officials said.

Many of the large pools of diesel fuel, noticeable by its distinct red color from dye, have been removed from Baltimore's harbor two days after a 2,000-gallon spill.