Norway in World Cup peril after Switzerland draw amid Hegerberg injury and player unrest

Norway coach Hege Riise was left sweating on news of an injury that forced star striker Ada Hegerberg out of Tuesday's goalless Women's World Cup draw with Switzerland.

Riise's problems were exacerbated due to tensions in the squad with Caroline Graham Hansen unhappy at being left out of the line-up.

Winger Graham Hansen, a Champions League winner last month with Barcelona, was dropped by Riise for the game in Hamilton following Norway's 1-0 defeat to co-hosts New Zealand in the opening match of the World Cup.

Meanwhile, former Ballon d'Or winner Hegerberg had lined up on the pitch for the national anthems before heading back towards the dressing room injured, with Sophie Roman Haug coming in as a last-minute replacement.

The Norwegian Football Association said Hegerberg had felt a pain in her groin in the final sprint of the warm-up, with Riise admitting she only realised a change would need to be made at the last moment.

"We were quick to have (the line-up) changed so Sophie could come in and not use a substitute," said Riise, who did not provide any further update on the extent of Hegerberg's injury.

Graham Hansen's frustration at not starting might be a more pressing concern for Riise with Norway now needing to win their last Group A game against the Philippines just to stand a chance of reaching the last 16.

According to Norwegian media, Graham Hansen complained she had not been shown respect after being left out of the starting XI.

Ada Hegerberg has been spotted walking back into the tunnel before kick off