They said seven other regional Solidarity leaders had been told to appear for questioning in their cities.
Solidarity leaders come to Warsaw's court, to hand over a request for registration of their union.
The Solidarity leader appeared to win nearly 40 percent of the vote.
But Solidarity leaders said the real test will come in September.
But the Solidarity leader stood by the movement's position that the time was not ripe.
But even former Solidarity leaders say that he and his party are part of current mainstream.
Despite the participation of Solidarity leaders in the strikes, most workers asked about the issues say they are largely concerned with money.
But it will not approach the $10 billion over three years that Solidarity leaders wanted.
"The round table is very close at hand," the Solidarity leader told a news conference here.
Eight years ago, Solidarity leaders would have applauded his views.