Mayor Kyle Moore confirmed there was an arrest in the Newcomb Hotel Fire.
Matthew Clark, 24, is charged with burglary and criminal damage to property over $100,000.
The Quincy Police Department scheduled a 3 p.m. press conference to announce the arrest in the Sept. 6 fire.
The fire came less than a week after the city announced that it secured a developer for the long dormant hotel that anchors the southwest corner of the downtown historic business district.
The five-alarm fire broke out at the Newcomb Hotel at approximately 8:45 p.m. No one died in the fire. Click here to watch video from the night of the fire.
One witness first reported the fire on the second floor, but that could have been the third floor. Click here for raw video of the firefighters battling the blaze.
Eyewitness Geoffrey Fletcher was just leaving work when he saw smoke, "I started seeing smoke in the second story, four rooms from the edge. People were calling 911 and I ran back in and called my boss. I told him about the fire so they evacuated Fitz's and then three fire trucks came. I came around the other side and the back was just on fire."
Demolition continues at the hotel site and the city still hasn't announced how it plans to deal with the debris left over from the demolition.
Thirty firefighters responded to the blaze.