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.

More than 100 personnel have been working around-the-clock to clean up Baltimore Harbor after 2,000 gallons of diesel fuel spilled into the harbor Wednesday after what officials said was an accidental overfill of diesel tanks that supply power for backup generators at Johns Hopkins facilities in East Baltimore.

Some 2,000 gallons of diesel meant for backup generators spilled into the Patapsco River in Baltimore, Maryland, on Wednesday, upon overfilling the tanks. Officials are using oil absorbent materials and skimmers to rid the river of the diesel,