Hello all, first post here. I only recently bought the game and I'm having fun but there are some problems that I don't know how to solve.

In my first game I conquered two cities. Now these cities are mine but still under siege, and caravans are on hold. I don't see an enemy unit in all the map, not near my new cities nor far from them. The result is, the two cities are starving to death and hurting my economy more than helping.

Is this a bug or I have to do something in order to free them from sieges?