North Carolina: A new timeline released Friday shows how four law enforcement officers were killed over the course of 20 minutes on April 29 while serving a search warrant in Charlotte, North Carolina.

Gunman Terry Hughes Jr., 39, killed Deputy U.S. Marshal Thomas M. Weeks Jr., North Carolina Department of Adult Correction Officers Sam Poloche and William "Alden" Elliott, and Charlotte-Mecklenburg Police Department Officer Joshua Eyer. Four other officers were wounded in the line of duty that Monday.

"This is the deadliest attack on law enforcement in Charlotte's history. It is one of the deadliest, single incident attacks on law enforcement across our country," Daniel Redford, president of the Charlotte Fraternal Order of Police lodge, told Fox News Digital. "We've had to say goodbye to four heroes. If there's anything we can learn from this incident, as we do with so many other incidents, to prevent this from happening again and save officers' lives, first responders' lives, that would be the only takeaway."

Here's the latest timeline of the shootout released by Mecklenburg County District Attorney Spencer B. Merriweather III as part of his investigation into 23 officers who returned fire at Hughes on April 29: https://www.foxnews.com/us/charlotte-deadliest-police-shootout-new-timeline-shows-how-officers-were-killed-over-20-minutes