Feb. 3 - A Moscow high-school student shoots dead a police officer and a teacher and holds more than 20 students hostage before he is disarmed and detained. Sarah Toms reports.
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This secondary school on the outskirts of Moscow is where a gunman took more than 20 pupils hostage.
Police here say the student killed one police officer and a biology teacher. Another policeman was shot and injured.
Officers say the hostage taker has since been "neutralised"
The hostages have been released and were seen running out of this building.
A helicopter landed at the scene and later an ambulance took a man away.
The gunman is believed to be a pupil in one of the upper classes at this school -- known as school number 263.
This latest incident comes as Russia prepares to host the Winter Olympic Games, due to start in Sochi this week.