It happens elsewhere, too. Like in my town (Finland).

A police captain, (not sure if that is correct title, itīs "kommissaario" in finnish) lost it when his wife wanted divorce. One night he went to the police station to get his service weapon. Then climbed via the balcony in to his ex-wifes apartment and shot and killed her. Then shot and wounded ex-wifes new companion (he survived) and finally killed himself.

They left two children. Imagine what they felt loosing both parents like that.