A 55-year-old Bosnian man has been detained for throwing a hand grenade at his wife on a street in the town of Buchs in the canton of Aargau, Switzerland.
The victim, a 59-year-old woman also from Bosnia, was taken to hospital suffering from stomach pains and had to be operated to remove a piece of shrapnel.
The woman had alerted police to the attack about an hour after it happened, although she attempted to minimize the incident and initially complained of just a finger injury.
Investigators discovered parts of the grenade in the street.
An analysis showed that the armament was made in the former Yugoslavia, police said.
Its detonation blew out a window in a nearby house.
The man suspected of throwing the device was caught on Sunday at the Italian border in Chiasso, in the canton of Ticino, after he returned from a brief visit to his home country.
It is not clear what the motive for the hand grenade attack was.
An investigation into the case continues.