THE Indian Super League has launched an investigation into claims Robert Pires was punched by an opposition coach while playing for FC Goa.

The former Arsenal midfielder - part of the 'Invincibles' squad of 2003/04 - is alleged to have been struck by Atletico de Kolkata coach Antonio Lopez Habas in the tunnel during half-time of their match game on Thursday.

CCTV footage has been made available to aid the investigation, although Atletico have declined to comment. A statement from the ISL read: "The disciplinary committee is reviewing the incident. They will pronounce the verdict as and when the conclusion is made from the evidence."