Country star Garth Brooks' "Blame It All On My Roots Tour" begins in August, with one price for every seat.
The Action News Troubleshooters have been hearing from some desperate consumers who say the tickets in their Ticketmaster accounts have been stolen.
Fans will want to make sure they're online as soon as they go on sale - tickets typically sell out within minutes.
Live Nation, the parent company of Ticketmaster, revealed Friday evening that it was the victim of a cyber attack that compromised user data.
"We're here not because Ticketmaster's conduct is inconvenient or frustrating ... we're here because it's illegal," Garland said.
The Justice Department and several states are expected to file a lawsuit as soon as Thursday against Live Nation Inc, citing alleged antitrust violations at least in part due to the market dominance of the company's Ticketmaster unit, a person briefed on the planned legal action said.