KIEV, Nov. 21 - Polish and Swedish foreign ministers are to meet Ukraine's richest man, billionaire Rinat Akhmetov, in a new bid to secure the release of Ukrainian opposition leader Yulia Tymoshenko, Reuters reported Monday.

The new attempt by European Union members to put pressure on President Viktor Yanukovych to bring about the release of his political rival came as a Ukrainian human rights monitor expressed concern over Tymoshenko's health.