BOSTON -- Several streets around Kenmore Square were closed Tuesday morning after a group chained a protest dummy to a bank.

The Boston Police Bomb Squad was called to the Commonwealth Avenue Bank of America at about 8 a.m. Tuesday after a dummy was chained to the bank door, locking employees inside, NewsCenter 5's Gail Huff reported.

"(Police found) a dummy locked to the front door and employees locked inside," Boston Police Capt. William Evans said.

The dummy, wearing a sweatshirt, jeans and a sign about "climate chaos," was pulled from the Bank of America building and dismantled.

"We weren't sure what the dummy was filled with and, because of that, we called in the bomb squad," Evans said.

No explosives were found in the dummy.

Police are looking at surveillance footage from the Kenmore Square area to see if the perpetrators were caught on tape.

"It will be a crime. I mean, obviously, locking people in and creating such anxiety, when we apprehend them, they will be charged with a crime," Evans said.

Mannequins for Climate Justice took responsibility for the incident in a press release to protest "the fossil fuel industry and its collaborators who are destroying the Earth."

"While Bank of America does not agree with these individuals' positions, we respect their right to voice them," Bank of America said in a statement. "However, we find all acts of vandalism to be unfortunate and unproductive."

The statement went on to say the bank has made long-term commitments to address climate change, including an initiative to finance the development and advancement of renewable and low-carbon energy sources.

Brookline Avenue, Beacon Street and Commonwealth Avenue were closed for a time, but were reopened at about 10:15 a.m.

The cost of the emergency response to the incident is estimated to be in the thousands.

"Heaven forbid we had a real emergency here because it really has an impact on the community," Evan said.