New Bedford Oil Spill Cleanup Underway After Diesel Fuel Coats Massachusetts Harbor (VIDEO)

Coast Guard officials are responding to a diesel spill in the New Bedford, Mass. harbor.

A marine safety officer with the New Bedford Fire Department reported a sheen on the water near Fish Island bridge around 7:30 a.m. on Thursday, according to The Boston Globe. A boom has been installed to try and contain the spill, and a fire lieutenant says the oil spilled is a "retrievable quantity."

The cause is still under investigation.

Susie Steimle, a reporter with a local NBC News affiliate, has been tweeting photos from the scene documenting oil retrieval efforts.

UPDATE 10:50 a.m.: The Coast Guard reports that the spill has been contained.