A letter revealed by the Orlando Sentinel shows the FBI requested law enforcement agencies who responded to and investigated the massacre at Orlando's Pulse nightclub to withhold information from the public.

A letter from the FBI dated June 20 attached to a lawsuit brought by the City of Orlando seeking the release of 911 calls in full, as well as other records pertaining to the shooting, had also been forwarded to the Seminole County Sheriff's Office — but included instructions for law enforcement to deny all requests for information.

Under the guise of protecting the investigation — as well as the victims and their families — the letter asks law enforcement agencies to deny information to anyone asking and "immediately notify the FBI of any requests your agency received" so "the FBI can seek to prevent disclosure through appropriate channels, as necessary."

Under an official FBI seal, the letter signed by special agent in charge of the agency's Tampa field office, Paul Wysopal — who refused to comment to the Sentinel — states, in part:

"As you know, this is an active, on-going investigation being conducted by the FBI. The FBI considers information obtained from state and local enforcement agencies in furtherance of its investigation to be evidence or potential evidence. Accordingly the FBI is concerned that public disclosure of such records or information at this time will adversely affect our ability to effectively investigate the shooting and bring the matter to resolution; could endanger the safety of law enforcement officers, and other individuals who have participated in or are otherwise connected with the investigation; and risks unduly prejudicing any prosecutions that may result from the investigation."

Though the letter claims the 911 audio recordings and any other information pertaining to the mass shooting would have an exemption under the Freedom of Information Act's Section 522(b)(7)(A) — "protecting records or information compiled for law enforcement purposes where disclosure would adversely affect a pending investigation" — the excuse seems flimsy and superficial.

According to the Sentinel, attorneys for media outlets involved argue in the lawsuit for the release of all pertinent records because there exists "a strong public interest in fully evaluating how first responders and police reacted during the most critical phases of this incredible tragedy."

Indeed, as recent revelations proved, law enforcement officers responding immediately to the scene entered the club to stop shooter Omar Mateen, but were told to hold their position until SWAT arrived — something Belle Isle Police Officer Brandon Cornwell said took "15 or 20 minutes — could've been longer."

But under strict orders from the FBI, the City of Orlando continues refusing to release any records "out of respect for Pulse shooting victims and the families."