Four people were killed and a fifth was injured in a mass shooting at a Midtown Manhattan office building on Monday.

Details continue to unravel about Monday’s Park Avenue mass shooting, which left five people dead, including the gunman.

A cleaner narrowly escaped the mass shooting at the Midtown Manhattan Park Ave. skyscraper, just missing a face-to-face encounter with the assault rifle-toting gunman, police said Wednesday. Through ...