Thirteen people in Hagfors, Sweden, were hospitalized after suspected carbon monoxide poisoning from an oven.

The incident occurred on Thursday evening in a local venue, possibly a wood-fired bakery or pizzeria.

Police and emergency services responded to the scene, where symptoms like nausea and fainting were reported.

Fortunately, all affected individuals were conscious and able to communicate.

The gas, which is odorless and highly toxic, likely leaked during the gathering.

Authorities have launched an investigation into the cause, but no suspects have been identified.

A police report for causing bodily harm has been filed.