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

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.

Crews were working Thursday morning to contain and clean up a 2,000-gallon (7,570-liter) diesel fuel spill in Baltimore’s harbor, according to state and city officials. Initially, Johns Hopkins Hospital reported a contained 200-gallon diesel fuel spill at its East Baltimore facility on Wednesday morning,