Didarul Islam, a 36-year-old NYPD officer, was off duty and working a security job when he was fatally shot by a gunman who opened fire at the 345 Park Avenue office building on Monday.

The NYPD officer shot and killed by a deranged gunman inside a Midtown Manhattan skyscraper Monday was identified as a “hero” dad and nearly four-year department veteran – whose wife is about to