The seven students were practising karate when the roof came crashing down, police said. (Photo: Twitter | ANI)

Hyderabad: Two girl students, aged around ten years, died and four others were injured on Thursday when a portion of a roof of a stage collapsed at a private school in Kukatpally here, police said.

The seven students were practising karate when the roof came crashing down, Deputy Commissioner of Police (Madhapur Zone) A Venkateshwar Rao said.

A girl student was injured seriously, police said, adding that all the injured have been admitted to hospital.

School authorities were being questioned in connection with the incident.