Orlando, FL - A mother called 911 for help as she texted with her son, who was trapped inside the Pulse nightclub. A sister told a dispatcher that her 20-year-old brother also was trapped, in a bathroom at the gay club, and that “he said there were a lot of dead people.”

People were texting, calling and video-chatting for help during the mass shooting of 49 people in June, and their loved ones frantically called police dispatchers in turn, according to numerous audio recordings of 911 calls released Tuesday by the Orange County Sheriff’s Office.

The sheriff’s office took overflow 911 calls when Orlando Police Department dispatchers were inundated during the worst mass shooting in modern U.S. history. The recordings show sheriff’s dispatchers mostly got busy signals when they tried to transfer calls back to police.

The Orlando Police Department has yet to release its 911 calls. A dozen news media companies including The Associated Press are suing for access to these public records as well as the communications between gunman Omar Mateen and the Orlando Police Department, during which authorities say Mateen pledged allegiance to the Islamic State.... Read More: VIN