The recount was ordered by Electoral Commissioner, Joseph Cain.
According to a statement, the ballot papers were found following the first count.
However, there is no explanation for the sudden appearance of the six ballot papers.
The Ubenide electorate provides four of Nauru's 19 MPs.
David Adeang, who was Finance Minister in the previous government, was the highest polling of the four winning candidates, with a margin of 103 votes over second placed Russ Kun.