, appearing to show him holding up a peace sign in the back of a police car.
The caption to the image, which appeared to have been posted on Snapchat, read: "Hey guys has inybody (sic) seen Tristyn lately.”
Police confirmed the image was being reviewed as potential evidence in the case.
As news of the murder made headlines across the US, a social media image surfaced of Fucci, appearing to show him holding up a peace sign in the back of a police car Credit: Snapchat According to Fucci’s arrest report, surveillance footage shows two people matching his and Bailey’s description walking together at about 1.14am on Sunday.
A neighbor’s surveillance camera also reportedly shows the same pair walking along Saddlestone Drive, close to where Bailey’s body was found, about 30 minutes later.
One of the people in the footage was wearing black pants and a black shirt, the same clothes Bailey was wearing when her body was found in the pond the next day.
The other person was wearing shorts, a light-colored hooded sweatshirt, and white shoes with a black Nike logo.
The arrest report said only this person was seen walking away from the area at around 3.27am carrying the white shoes in their hand.
A search of his home also yielded "multiple items of evidenciary value" at Fucci's home, police said, including items of clothing that tested positive for the presence of blood.
Sheriff's have been apprehensive to unveil new details in the case Credit: Facebook The sheriff’s office has declined to release new information in the case.
“This is a cold-blooded murder by an individual who, I’m not even gonna give his name. He doesn’t even deserve for his name to be mentioned,” Sheriff Rob Hardwick said during a press conference earlier this month.
"“This is a cold-blooded murder of a 13-year-old young girl who did not deserve to die.”
Fucci currently remains in a state-run juvenile detention facility in Volusia County.
He is being held without bond.
Florida cheerleader Tristyn Bailey, 13, stabbed a ‘horrific’ number of times in ‘cold-blooded murder' sheriff says