The first reports were reassuring.
But a Boston police official does not rule out a connection, according to the Dorchester News, which reported:
In a press conference around 4:30 p.m., Commissioner Ed Davis said police are not certain that the incident is related to the Copley Square explosions, but they are treating it as if it is related.
Paul Yazbeck, a JFK Library employee, said he saw a small fire and heard what he defined as “definitely an explosion.”
The JFK Library site reports only “an unexpected mechanical failure.”
Earlier the Boston Globe reported that the two incidents “were likely unrelated.”