New Delhi, July 29 -- Julia Hyman, a young professional and Cornell University graduate, has been identified as the latest victim in Monday's deadly mass shooting at 345 Park Avenue in Midtown Manhattan. Hyman worked as an associate at the property management firm Rudin and was killed on the 33rd floor-tragically, because the gunman, 27-year-old Shane Tamura, entered the wrong elevator. His intended destination was the National Football League's New York offices.

The attack claimed four lives in total. Among the other victims were NYPD officer Didarul Islam, who was shot in the lobby; Blackstone senior executive Wesley LePatner, 43; and security guard Aland Etienne.

Authorities are still working to determine the motive behind the fatal ...