Authorities say Shane Devon Tamura travelled across the country from Las Vegas to open fire inside the skyscraper.

Four people including a police officer were killed after a gunman walked into a skyscraper in central Manhattan and opened ...

At least four people including a police officer were killed Monday after a gunman walked into a skyscraper in central ...

There have been 254 mass shootings in the United States this year including Monday's incident in New York, according to the ...