At the same time, the Swedish Empire, which technically already was in conflict, although with a cease-fire agreement, with the Commonwealth from the Polish-Swedish War of 1626-29, invaded in July 1654 and occupied the remaining half of the country. In 1656, after three days of battle, Vawkavysk was destroyed and burned by the army of King Charles X Gustav of Sweden. The administrative center of the town was a castle on the river near the road to Izabelin, which was destroyed alongside the town.