New York City is mourning NYPD Officer Didarul Islam and three other people killed in Monday's shooting inside an office building at 345 Park Ave.

The New York police officer killed in a mass shooting in a Manhattan skyscraper on Monday was an immigrant who left behind a pregnant wife, two young sons and distraught parents, while friends and officials in Bangladesh and the United States described him as a hero.

Police have lined up four rows deep to pay respects to a fellow officer who was among the victims of a gunman's rampage at a Manhattan office tower.

New York City and New Jersey are under states of emergencies as torrential rain pounds the Northeast on Thursday afternoon.

A state of emergency has been declared in New York and New Jersey as flash flooding hits both states. The National Weather Service posted flash flood warnings along parts of the Northeast urban corridor stretching from the Washington-Baltimore region north through Philadelphia,

The New York City area and New Jersey declared states of emergency Thursday as heavy rain with the potential for flash floods approached the region. Weather is expected to dump several inches of rain in the New York-New Jersey areas as residents make their evening commutes home.