VIDEOS: A massive fire broke out at a historic Domino Sugar refinery in Baltimore on Tuesday, resulting in a large storage dome collapsing under the flames.
Helicopter video posted on Twitter by reporters for WJZ showed the storage dome collapsed, with fires still burning at either end.
Other photos and videos of the fire showed smoke plumes wafting across much of the city as firefighters continued to battle the blaze.
A tweet from a local firefighter's union indicated that first responders were battling the blaze with trucks as well as firefighting boats dispatched around Baltimore's Inner Harbor.
The Hill has reached out to Domino Sugar for comment on the fire.
The historic refinery, and its iconic Domino sign, have been a landmark in Baltimore since the early 1950s.
Company officials were in the process of replacing the aging neon sign with an updated version that was set to be unveiled officially on July 4.