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.

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.

Emergency crews from a host of government agencies were working through the night to clean up a 2,000-gallon diesel spill along part of Baltimore’s waterfront that started Wednesday morning. The spill is near the East Harbor Marina in the Patapsco River and originated from a Johns Hopkins Hospital facility in East Baltimore,