Four people were killed and a fifth was injured in a mass shooting at a Midtown Manhattan office building on Monday. The injured victim was an employee at the NFL, according to NFL Commissioner Roger Goodell. Here's what we know about the four people killed:

New York police honor fallen officer Didarul Islam with funeral services after he was killed by a gunman in a Midtown office building on Monday evening.

Family and friends of the four victims killed in the Midtown mass shooting have spent several days mourning and laying their loved ones to rest. It’s believed that 27-year-old Shane Tamura targeted 345 Park Ave.

Two of the victims gunned down in a mass shooting at a Nevada Casino were in town to celebrate a bachelor party — and were shot in the back by a gunman whose seemingly random attack has left

The motive in Monday's mass shooting at a casino in Reno might forever remain a mystery. Police say the suspected gunman, 26-year-old Dakota Hawver, died overnight, the Reno Gazette Journal reports. Hawver,