On Monday, police announced that 21-year-old Wesley Fontaine was also arrested in connection with the crime.
Detective Alec LaFontaine with the Charlotte-Mecklenburg Police Department said officers took this case personally.
“We actually see him throughout the community frequently selling ice cream. We've gone up to him, we've purchased ice cream ourselves,” LaFontaine said.
Police said they were able to identify Mackey by surveillance video in the area.
They said they didn’t identify Fontaine until he was arrested Saturday on unrelated charges.
About a week later, Alberto said there is still pain from the beating, but he's also felt the warmth of a community that has rallied around him since the attack.
“The poor man didn’t deserve anything he got,” Alberto’s friend Hugo Lopez said.
Friends have set up a GoFundMe account to help pay for his medical bills and loss of wages.