A gunman wearing a swastika t-shirt killed at least 13 people and wounded 21 in a Russian school, officials said

• A gunman killed at least seven children and six adults in a Russian school, officials said.
• Russia's Investigative Committee said the gunman wore all black with a red swastika.

A gunman opened fire in a Russian school on Monday, killing at least 13 people including seven children, Russian state officials said.

Russia's Investigative Committee, the federal investigations authority, said 21 people were wounded. The gunman died by suicide, according to Reuters.

Six adults, included teachers and security guards, were killed, the committee said.

It is not clear what age the children injured or killed were.

The shooting took place in Izhevsk, around 600 miles east of Moscow, Reuters reported.

The gunman wore all black and a balaclava, and had a red swastika symbol on his t-shirt, officials said. The committee described it as a "Nazi symbol," the Associated Press reported.

The swastika is an ancient symbol used by many cultures, but was adopted by Germany's Nazi party and is now used by many far-right and neo-Nazi individuals and groups.

Kremlin spokesman Dmitry Peskov called the shooting "a terrorist act," the Associated Press reported.

There is no indication that the shooting is connected to the panic in Russia over the war with Ukraine and Putin's recent mobilization of more troops.