Fans from Afghanistan and Pakistan clashed during the World Cup match between the two sides after pro-Balochistan banners flew above the Headingley ground Sunday, prompting the ICC to promise an investigation into the matter in collaboration with West Yorkshire police.

from Times of India https://timesofindia.indiatimes.com/sports/cricket/icc-world-cup/icc-world-cup-2019-as-their-teams-fight-it-out-pakistan-and-afghanistan-fans-come-to-blows/articleshow/70007626.cms