Two Ukrainian servicemen were stabbed to death at a shopping center in southern Germany Saturday evening, by a suspected Russian national, German and Ukrainian authorities say.

German police say a 36-year-old man died on the scene in the city of Murnau, and a 23-year-old man died later that evening at a nearby hospital.

Both Ukrainian men were residents of the district of Garmisch-Partenkirchen and had been in Germany undergoing medical rehabilitation.

A 57-year-old suspected Russian national was arrested at his home not far from the scene, according to German authorities.

A criminal investigation is underway for the suspected double murder.