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 ...

LAS VEGAS -- The gunman who killed four people before taking his own life in a midtown Manhattan office building that houses the NFL's headquarters had for years sought medical help for frequent, ...

(CNN) — During evening rush hour in New York City on Monday, a man calmly walked into a Park Avenue office building lobby and killed a police officer, then opened fire on other innocent strangers.

Officer Didarul Islam, 36, who was guarding the building on a paid security job when he was killed, had served as a police ...

The Bronx community met outside the 47th Precinct to honor the NYPD officer killed in the Midtown mass shooting. CBS News New ...

Officer Didarul Islam, killed in the Midtown shooting, was honored at a Bronx funeral and is expected to be laid to rest in Totowa, New Jersey.

A flatbed truck carried a digital billboard showing photos of Officer Didarul Islam and a commemorative message from his union.

A man stalked through a Manhattan office tower firing a rifle, killing four people, including a New York City police officer, ...

A vigil for NYPD Det. Didarul Islam, one of the four victims​ killed in the Midtown Manhattan office building shooting, is ...

Family and friends gathered at Central Synagogue to mourn Wesley LePatner, one of four victims killed in Manhattan office ...

Roughly 15,000 mourners gathered for the funeral of NYPD Officer Didarul Islam, who was killed in an office building shooting ...

There were 23 shell casings and 13 bullet fragments recovered from the lobby of 345 Park Avenue and 24 spent shell casings on ...