The New York False Claims Act (NY FCA) was amended in August 2010 to expressly apply to knowing violations of the New York State Tax Law. As reported in a previous blog entry, a whistleblower filed an action against Sprint Nextel Corporation alleging that it failed to collect or pay New York State sales taxes on receipts from the sale of certain wireless telephone services. After an investigation, the attorney general for the State of New York, Eric T. Schneiderman, intervened and filed a superseding complaint adopting the FCA claims and alleging additional claims against the mobile telecommunications service provider. Among those claims were claims premised on conduct predating 2010, when the NY FCA was amended to include tax violations.