On 9 and 10 May 2015, five people were reported to have been shot dead in the Swiss town of Würenlingen. One of dead may be the attacker, a Swiss national. It is believed that the attack was a family dispute.
The offender killed his parents in law, his brother in law, the neighbour and then himself. He was known to the police for various offenses. His wife and his three children live apart from him in a secret welfare house. The misused gun was not registered and was not from army stocks. Even in a recent house search at the residence of the offender in the canton of Schwyz no gun had been found.
References
2015 Würenlingen shooting Wikipedia(Text) CC BY-SA