A serious incident happened in Germany, where a mother killed her two teenage sons and then ended her life.
The family tragedy is reported to have happened in their apartment in Villingen-Schwenningen, Germany.
The police said that a 45-year-old woman is known to have killed her two sons first and then herself.
According to foreign media, it was the husband and father of the children who found his wife and two sons, 14 and 16 years old, dead in the apartment on Tuesday evening.
Rescue workers could only confirm their deaths.
Officers recovered a knife, which is suspected to be the murder weapon.
According to initial investigations, the mother first killed the two teenagers and then herself.
The Department of Criminal Investigations has started further investigations.
According to the report, investigators questioned neighbors in the neighborhood Tuesday night while the forensics team secured evidence.