Meanwhile the bombardment of the Syrian city of Homs was reported to have continued after a brief lull on SaturdaynightandSundaymorning, with activists saying four people had been killed.
''I'm satisfied that we have essentially spoken to every taxi and delivery driver who was working in the area on that Saturdaynight into Sundaymorning.
Boston Mayor Thomas Menino said crews pretreated roads Saturdayand plows were working through the night, but travel could still be treacherous on Sundaymorning.