The Lithuanians, under the command of Duke Vytenis, on Pentecost, June 4, invaded the city of Łęczyca and captured the fortified collegiate church at Tuma.

[c] When, on the Thursday after Pentecost, they forced their way into it through forests and groves with the permission and support of Duke Boleslaw of Mazovia[d] in such silent and unknown array that they misled all who passed them, attacking first the collegiate church in Łęczyca and murdering there or taking captive a great number of the people of men and women who had gathered there to celebrate the feast.

They take the prelates, canons and priests of the Lord captive without mercy, and plunder the liturgical vestments, vessels and jewels.

The enemies then scattered to the villages and settlements and, having taken a great booty in the form of men and cattle, hastened back.

And the booty they gathered in the form of Polish prisoners of war was supposedly so great that twenty Christians, Poles, fell to each barbarian in the division.