Responding to questions, Bristol Police Capt. Brian Burke  revealed more details about a suspicious letter containing a white, powdery substance that triggered the evacuation of the Bristol Warren Regional School District administration building on Wednesday, Jan. 29.

First, the letter was mailed to a female employee's house and opened at her house earlier in the week. She then brought the suspicioius letter to the office, which touched off the scare within the building.

Secondly, Capt. Burke said the letter did not contain any threat to any school building, personnel or students. Because the matter is under investigation by Bristol detectives, he would not comment on the content of the letter any further.

The scare, which began around 11:30 Wednesday morning, triggered a massive response from area police officers and firefighters. Following protocols, first-responders taped off the building and called special Hazardous Materials teams to the scene from East Providence and North Providence. Those units follow a precise set of steps to set up a decontamination area, prepare chemicals and enter the building with protective gear, masks and equipment.

Once they completed all their protocols, they entered the building, removed the envelope, tested it and found it was not hazardous. The whole affair took more than five hours, and district employees, plus a couple of school committee members who were inside at the time of the evacuation, were kept in a yellow school bus until they were cleared to leave.