Russia school shooting: 9 killed

A gunman attacked a school Tuesday morning in the Russian city of Kazan, sending students running out of the building as smoke poured from its windows. At least nine people were killed - seven eighthgrade students, a teacher and another school worker - and 21 others were hospitalized, Russian officials said.

Footage released by Russian media outlets showed students dressed in black and white running out of the building. Another video depicted shattered windows, billowing smoke and sounds resembling gunshots in the background.

Dozens of ambulances lined up at the school's entrance after the attack and police fenced off access to the building.

Russian media said while some students were able to escape, others were trapped inside during the ordeal.

All students were eventually evacuated to nearby day care centers and collected by their families. Officials said the attacker has been arrested and police opened a criminal investigation into the shooting. Authorities immediately put additional security measures into place in all schools in Kazan, a city 700 kilometers (430 miles) east of Moscow. Rustam Minnikhanov, governor of the Tatarstan republic where Kazan is the capital, said four boys and three girls, all eighthgrade students, died, as well as a teacher and another school worker. "The terrorist has been arrested, (he is) 19 years old. A firearm is registered in his name. Other accomplices haven't been established," Minnikhanov said after visiting the school. According to Tatarstan health officials, 21 people were hospitalized with wounds after the attack, including 18 children, six of whom were in "severely grave condition."