NFL boosts security at league offices following deadly shooting at New York headquarters

"We're very lucky that our security chief, Cathy Lanier, the former police chief in Washington, D.C., has tremendous experience in this space and that we have terrific partners in the building as we look for ways to make it even more secure than it was before."

Four people were killed, and a fifth was wounded inside the 345 Park Avenue building on July 28 when investigators say Shane Tamura, 27, of Las Vegas, opened fire while trying to get to the NFL offices. The building also houses the headquarters of Blackstone. 

"We honor the four innocent lives lost, including NYPD Officer Didarul Islam, whose heroism will never be forgotten. Our thoughts are with the survivors as they begin the difficult journey of physical and emotional recovery."

Earlier this month, the NFL reportedly sent a memo to all 32 teams advising them to enhance security following the deadly shooting. 

Among the recommendations was the proposal to have armed law enforcement or security officers at team and league buildings when players or staff are present. Another recommendation was weapons screenings at those locations.

"The Committee recognizes that these changes will affect day-to-day operations and require an investment of time, coordination, and resources," the memo said, according to ESPN. "However, there is no higher priority than the safety and the sense of security of our players, coaches, staff, and everyone who works in and around our facilities.

Fox News Digital's Stephen Sorace contributed to this report.