After the excavations in the church were completed, it appeared that a new water pipeline had to be placed next to the church so water for fire fighting could reach the church tower if necessary. Therefore a trench for the water pipe was dug and this revealed yet another extraordinary find, a common grave.
“Common graves have been found in the city cemeteries before, but here was the cemetery of the St. Nicholas congregation, where people were buried in individual graves. Eight skeletons were found in the collective grave and in addition there were seven other individual burials. These were higher in the ground, all in coffins, and probably date back to the 17th to the 18th centuries. In the common grave they were all buried according to Christian custom, heads towards the west. They are all neatly laid in one grave, hands folded together. “They had not been thrown there in a hurry, as in the case of war graves, but since they died together, probably because of the plague, they were buried like that at the same time,” said Malve. He suggested that the common grave could date back to the 16th –17th centuries. It is known that there were several outbreaks of plague in Estonia around the Livonian War, and these may have been the victims of one of them.