Yale University has warned its students and staff it remains on lockdown and they should continue to "shelter in place" if on campus.
"IF OFF CAMPUS, STAY AWAY", the university's website warns.
More top news
Rain for the northwest, dry and cold elsewhere
Rejecting a showdown with Ed Miliband, David Cameron's terms sent to broadcasters reveal his deep dissatisfaction with the debate proposals.
The owners of what some people claim to be the 'Welsh Holy Grail' are offering a cash reward for the ancient artefact's safe return.