Two students were also injured in the incident.Hyderabad: Two girls, around 10 years old, died when a portion of a roof at their school in Hyderabad collapsed during Karate class today.

Four others were injured.Seven Class 4 students were practicing the martial art when the roof came crashing down, trapping them in the rubble.

Another girl student was injured seriously, police said, adding that all the injured have been admitted to hospital.The bodies of the two girls have been sent for postmortem. The principal of the private school in Hyderabad's Kukatpally is missing.A case has been registered against the management of the school. Investigations are underway, police said.