Five people are now known to have died during a shooting in northern Switzerland, including the gunman.
Police told a news conference on Sunday afternoon that the gunman knew his victims and was related to some of them.
The shooting was a family matter, according to the police, who did not identify the victims or the suspect.
Officers responded to reports of shots fired late on Saturday night. They reportedly found the bodies inside and outside a home in Wuerenlingen, a residential community of 4,500 people located north-west of Zurich.
A neighbour told Swiss newspaper Blick she heard four shots in a row fired very quickly on Saturday night, then two more shots after a pause. The tabloid reported she heard no screams.
The area had another serious incident 30 years ago when a real estate agent murdered his wife’s lover along with two prostitutes.
The 1985 incident happened a few hundred meters from where Saturday night’s incident took place.