__________________The Boston police commissioner Edward Davis told the news conference that there had been a third explosion."We have, at this point of time, determined that there has been a third incident that has occurred. There was an explosion that occurred at the JFK library. So this is very much an ongoing event of this point time. We are not certain that these incidents are related, but we are treating them as if they are." Police in Boston have urged the residents of the city to stay indoors and not to congregate in large groups.______________波士顿警察局长爱德华?戴维斯在新闻发布会上表示曾经发生了第三次爆炸."目前为止我们已经确认发生了第三起爆炸事件.这起爆炸发生在JFK图书馆.所以,现在事态仍在继续发展.我们不确定这些事件是否存在关联,但是我们仍然视为连环爆炸来处理."波士顿警方已经敦促市民在室内活动,不要举行大规模集会.
.. just in, Boston police said the explosion at the finish line of the city's Marathon were almost simultaneous, they say no further explosive devices have been found so far near the finish line but the investigation is ongoing.