THE NFL will increase security at its headquarters following last month's mass shooting in Manhattan last month.

Shane Tamura, 27, shot dead four people and seriously injured an NFL employee during the attack.

Earlier this month, the NFL recommended enhanced security measures at team and league facilities.

It was revealed Friday that the NFL will improve its security at its headquarters.

A league executive shared that the NFL will work with the other tenants at 345 Park Avenue to put forth the changes.

The proposed changes will be looked at a special league meeting next week.

The build reopened on August 4.

Police believe the gunman, Tamura, was targeting the NFL offices when he killed four people , including a police officer, during the shooting.

He then turned the gun on h

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