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Reports have come out that an unknown assailant killed at five people in the small Swiss town of Wuerenlingen last night (Saturday).

Five people, all adults, are reported dead. There in no information yet on their identities.

Police say that they were called after local residents heard gunshots. They are still investigating the incident, and have only said that they believe the attack to be family-related and not terrorism.

The gunman knew the victims and was related to some of them, Reuters reports. The gunman is dead as well.

Wuerenlingen is a town of 4,000 residents in the northern canton of Aargau.