Private equity group Penta has agreed to buy a string of Czech newspapers from German media group Verlagsgruppe Passau, the latest in a series of deals that has shifted ownership of the country’s main print media to Czech and Slovak financial firms. Penta said on Wednesday it would take sole ownership of Vltava-Labe-Press, which publishes regional papers Deník with a daily print run of 140,000 and readership of 630,000.