It's unclear who the male caller is, but he said he was watching a black male in a white t-shirt looking into the home. The caller claimed, "He's been caught on camera a bunch before at night. It's kind of an ongoing thing out here."

There had allegedly been a series of break-ins in the Brunswick, GA neighborhood prior to the February 23 shooting. The caller said, "He's running right now. There he goes right now" ... and the 911 dispatcher said she was sending police to the scene.

A second call was made to 911, apparently by Gregory McMichael ... the father of Travis McMichael, the man who confronted Ahmaud with a shotgun. The elder McMichael was out of breath during the call, and told the operator there was a "black male running down the street."

Gregory then yelled, apparently to his son, "Stop that damn it, stop! Travis!!"

It's unclear if the second call was made before or after the fatal shots that took 25-year-old Ahmaud's life.

As we reported, video of the incident shows the McMichaels in a white pickup truck blocking the road down which Ahmaud was running. That's what led to the confrontation and a brief wrestling match between Travis and Ahmaud. Seconds later, at least 2 shots were fired and Ahmaud fell to the ground. He died from the gunshot wounds.

The Arbery family attorney, Lee Merritt, told us a third man was involved in chasing down Ahmaud -- he says the person recording the video was trailing the chase in his own vehicle ... allegedly to block Ahmaud from escaping.

Neither of the McMichaels have been arrested or charged in Ahmaud's death. The release of the video this week has sparked national outrage and demonstrations.