The cardinal-primate, by the instigation of the Swedish king, whose army lay encamped in the neighbourhood of Dantzick, assembled a diet at Warsaw, which solemnly deposed Augustus, and declared the throne vacant.

Their intention was to elect young Sobieski, son of their late monarch, who resided at Breslau in Silesia: but their scheme was anticipated by Augustus, who retired hastily into his Saxon dominions, and seizing Sobieski, with his brother, secured them as prisoners at Dresden..