A gunman opened fire at an adult education center in the Swedish city of Örebro on Tuesday, killing at least 10 people in what the country’s prime minister called the “worst mass shooting in Swedish history.

The 35-year-old lone gunman shot and killed 10 people before turning one of his weapons on himself. The mass shooting occurred against the backdrop of rapidly growing social inequality, the promotion of militarism and war fever,

The shooter targeted a center that serves migrants seeking to integrate into a country that had already reversed its liberal migration policies.