A pair of Am Law 100 firms have picked up roles in an internal probe requested by the National Basketball Association’s Indianapolis Pacers over recently departed forward Paul George.

The Pacers accused the Los Angeles Lakers of tampering with George, who was traded to the Oklahoma City Thunder in early July to play out the last year of his contract. In a brief statement Sunday, the NBA confirmed the investigation at the Pacers’ request and its retention of Wachtell, Lipton, Rosen & Katz to handle the inquiry.