In a brief statement, UEFA said it would be looking into whether Juventus had provided misleading information to get the first case resolved with a "settlement agreement" in August.
The entire board of directors including president Andrea Agnelli and vice president Pavel Nedved at Juventus had earlier resigned
Prosecutors in Turin have since last year been exploring allegations of false accounting and irregularities in the transfer and loans of players.
Serie A: Milan's title defence still on track after 2-1 win over Fiorentina; Kean's brace helps Juventus beat Lazio
AC Milan finished eight points behind Serie A leaders Napoli before the World Cup break while Juventus moved to the third spot after their victory over Lazio.
Italy international Kean scored the winner in the second half to extend the club's league winning streak to five games.
Goals in each half from Moise Kean and Weston McKennie and a late Adrien Rabiot brace gave struggling Juventus their second straight win
Serie A: 'Happy to be on the green again', Juventus' Paul Pogba returns to training after long injury layoff
Pogba's return to training boosts hopes of the midfielder being part of France's World Cup campaign in Qatar starting next month.
Dusan Vlahovic pushed in the winner with 15 minutes remaining to give Juve their first away win this season.
UEFA Champions League: Massimiliano Allegri 'ashamed' as Juventus fall in Israel to edge closer to exit
After the game, Juventus president Andrea Agnelli expressed his dismay but repeated his support for Massimiliano Allegri.
While AC Milan levelled at 20 points with toppers Napoli, they are still third on the table. Inter Milan (15) are placed seventh, just ahead of Juventus (13) on eighth position.
‘Very happy for Federico,’ says Juventus boss Allegri as Chiesa nears full recovery from knee injury
Chiesa has been out of action since January after tearing ligaments in his left knee and although Allegri won't have the Italy forward available for Wednesday's match at the Allianz Stadium he is relieved that one of his injury problems is being resolved.
Juventus have zero points after two games and are floundering in Group H with PSG and Benfica both ahead with six points, winning two out of two games.
Atalanta gave up the Serie A lead after a 1-1 draw with Cremonese.
Three adults and a minor were arrested Tuesday night in Paris after Italian fans made Nazi salutes or monkey gestures at the game
It’s the first competitive meeting between PSG and Juventus in 25 years.
Qatar-owned French champions PSG were given the biggest fine of 10 million euros ($10m) while Roma, AC Milan, Besiktas, Marseille and Monaco were also punished.
Serie A: AC Milan maintain unbeaten start to title defence as Tammy Abraham earns Roma 1-1 draw at Juventus
Stefano Pioli's side took full advantage of Inter Milan's loss at Lazio on Friday night to move a point above their local rivals.
The Italian club will pay Marseille €900,000 for the season which could rise to €1.7 million depending on certain goals being achieved.
Serie A: Juventus held to goalless draw by Sampdoria; Smalling guides Roma to second consecutive win
Massimiliano Allegri's side were uninspired and failed to create much against a solid Samp at the Stadio Luigi Ferraris in Genoa.
New signing Angel Di Mara was at the heart of every good move from Juventus in their opening match on Monday. He scored one goal and set up another in a 3-0 win over Sassuolo as the Bianconeri looked very different from the team often labelled as dull and boring last season