The Midtown Manhattan skyscraper where a gunman killed a police officer and shot additional people on Monday afternoon houses several financial firms and other offices, including those of the investment giant Blackstone and the National Football League.

A 44-story tower at 345 Park Avenue, the building is also home to the offices of the accounting and financial advisory firm KPMG, the German investment fund Deutsche Bank, the consulate general of Ireland and the Rudin Management real estate firm.

The building occupies an entire block bordered by 51st and 52nd Streets and Lexington Avenue and is one of the handful of buildings in Manhattan to have its own ZIP code.

It is owned by Rudin, one of the oldest real estate firms in New York. The firm owns office buildings and residential towers totaling about 15 million square feet of space in New York City.

The building is situated in the busy commercial district of Midtown, an area packed with office towers that house major corporations and financial institutions. To its immediate north is the Seagram Building, the 1958 bronze monolith by Mies van der Rohe and Philip Johnson; to the south is the Sotheby’s Institute of Art.