[1][2] When he received news of the advance, Bishop Magnus in Åbo bombarded Sten Sture with letters, with extreme exaggerations like that the Russians were preparing to send a fleet of 2,000 ships to Stockholm.
The bombardments struck fear in the defenders, being 1,800 troops[1][2] called up from Stockholm and Åbo and 800 quickly organized peasants from Nyland.
[4][5] On 12 October Knut Posse made an attempt to break the siege, with the assault being decided to be directed towards Vatikivi during night time.
[1][3][5] On the same day, Niilo Pentinpoika, Maunu Prille, and Hartwig Winholt along with Knut Posse accompanied by the Swedish force began rowing to Vatikivi.
[3][1] However, the peasants once again ran back to the boats causing several more to sink, and in the chaos that ensued Maunu Prille and Niilo Pentinpoika were captured by the Russians.