Bollywood superstar Shah Rukh Khan on Saturday injured his back while on his way to the city to promote his latest release "Jab Harry Met Sejal". The actor was forced to delay his arrival by flight. "I am sorry for the delay. I had to get a dressing done as I injured my back today (Saturday)," he said in a telephonic message to waiting reporters. It was not immediately known how he suffered the injury. Shah Rukh, Anushka Sharma and film director Imtiaz Ali are expected to visit a mall here to meet their fans and then address the media. "Jab Harry Met Sejal" was released on Friday.