Apartments evacuated after woman pours substance on floors

Boston firefighters, including a hazardous materials team, were called to the Temple Street brownstone. (JOHN BOHN/GLOBE STAFF)

Several apartments directly behind the State House were evacuated last night after a resident barricaded herself in and poured ammonia or some type of chemical over the floors of her apartment.

A police SWAT team arrived early this morning and entered the building. As of press time, they had not entered the apartment.

Two building trustees for the brownstone on Temple Street said the resident is a former chemist at the Massachusetts Institute of Technology who kept mostly to herself.

Police hostage negotiators also were attempting to get the woman to come out of her apartment.

According to Fire Department spokesman Steve MacDonald, the call came in at about 9 p.m. to go to the fourth floor of the apartment building on Beacon Hill.

Upon arrival, firefighters opened the door to the apartment, but the woman hid. They believe, from the substances they saw, that she has a knowledge of chemicals.

They said they did not see or make contact with the woman, but backed off and allowed police to try to negotiate with her. Natural gas service in the building was shut off as a precaution. No other buildings in the neighborhood were affected.

MacDonald said the severity of the spills and the odor coming from the apartment resulted in responders declaring a Level 2 hazmat situation, in which only responders wearing airmasks were allowed on the scene.

Police said the odor was consistent with some sort of chemical lab, but they have not determined if drugs were involved. Police would not release the name of the woman.

Tara LaChapelle, 20, a senior at Suffolk University who lives in the building, said authorities evacuated residents and cordoned off the building with caution tape.

She said there have been problems with her upstairs neighbor before.

"There's been disturbances before, like noise and hammering on my ceiling, her floor, that knocked down picture frames and other random noises like crying," she said.

Several nearby buildings were evacuated as a precaution, with others cordoned off. Residents were not allowed to leave the scene's perimeter.

That angered neighbors who said they just wanted to go to sleep.

"I came home to find all this," said Sara Lehrhoff of 27 Temple St., motioning toward the police, firefighters, and media surrounding her home. "I was told that people in [my] building were smelling something, but we never did." She said she was told by police that someone "was cooking something up."

There was no word this morning as to whether or not the State House had to be evacuated.

John Guilfoil can be reached at jguilfoil@globe.com. Milton Valencia of the Globe staff and Globe correspondent Gabrielle Dunn contributed to this report.