Officials say crews are working to contain and clean up a 2,000-gallon diesel fuel spill in Baltimore’s harbor.

Emergency crews from a host of government agencies were working through the night to clean up an estimated 2,000-gallon diesel spill in Baltimore’s Inner Harbor that started on Wednesday.

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.