Amid controversies over its use of US business visas, Infosys today said an American court has sought documents and records related to the company's sponsorships and utilisation of B1 business visas.

The development comes at a time when Infosys is facing a lawsuit by a former employee Jack Palmer, alleging that he was asked by the firm to sign on documents which said workers were heading to the US to have meetings rather than to work there.

The country's second largest software exporter said it has received a "subpoena" from a Grand Jury in the US District Court for the Eastern District of Texas.