Around 11:30 Monday morning multiple explosions went off at 300 Richmond St. in Providence.
According to the Associated press, an underground fire caused eight manhole covers to blow off.
National Grid President Tim Horan said high carbon dioxide levels were detected in the building, which is used by Women & Infants. Fire personnel had responded there to reports of an odor when the explosions began.
Police on scene started re-routing traffic and warning people to stay away from manhole covers.
Mayor Taveras tweeted, asking people to 'please stay clear of Richmond Street from Point to Chestnut Street as area has been evacuated.'
An ABC6 viewer from Brown University says campus police have warned faculty to take cover via text message.
In a press conference, officials said they are still investigating what caused the fire, but it is not gas-related.
Two civilians were minorly injured.
Officials are still on-scene investigating but the some of the area streets have re-opened.