Local and federal officials are looking into an oil spill at the Hagatna Marina.

The U.S. Coast Guard and Guam Environmental are investigating the source of the underwater oil spill and how much oil has actually flowed into the marina.

The Port Authority of Guam confirmed it happened Monday around 10:30 p.m.

The spill was reported as a private contractor was doing construction at the Guam Fishermen’s Co-op property.

Officials said the contractor was excavating and dredging the rocks behind the co-op at the time.

The co-op called on an environmental emergency response company to assist in containing the spill.

Port General Manager Rory Respicio said, “Our safety division worked diligently with the emergency response contractor to ensure that the oil booms placed in the waterway did not impede or endanger the safety of our marina boaters.”