The mystery is solved: Authorities tracked down the person who left a suspicious note at the memorial site for Ahmaud Arbery, the 25-year-old Black man who was gunned down by two white men in Brunswick, Georgia on Feb. 23.
The note, which was left near the spot where Arbery was killed, read: "I am so sorry. I should have stopped them. I am so sorry."
The note sparked conspiracy theories about a 4th person being at the scene when Arbery was shot by Travis McMichael during a struggle after Arbery reached for McMichael's shotgun.
S. Lee Merritt, the Georgia attorney who is representing Arbery's mother, tweeted, "We need to discover who left this note!"
The Georgia Bureau of Investigation tracked down the note author and determined the person just wanted to leave their condolences to the family.
The GBI announced the person was "expressing their condolences for Arbery's death."
Travis, 34, and his father, retired police detective Gregory McMichael, 64, are being held without bond while awaiting trial on murder and aggravated assault charges.