A complaint was registered under Town police station in Medininagar, Palamau district by her father Md Yusuf today, the police said.
In his complaint, Yusuf stated that Khatoon had left for Ranchi five days ago to catch a flight to Australia from Delhi, but went missing since.
There was no trace of her and her mobile phone was also switched off, he stated.
Officer-in-Charge of the police station, Sanjay Kumar Malviya, said investigation was on.
Palamau District Policemen's Association has helped Khatoon with Rs one lakh to take part in the tournament in Australia.