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.

Wesley LePatner, 43, was among the four people killed by a gunman who stormed the Park Avenue building where she worked on Monday.

Thousands of familly, friends and colleagues are expected to gather to mourn the NYPD officer killed in this week’s Manhattan office attack at a funeral on Thursday, a day after another grieving family laid their loved one to rest,