Okore, Pedersen complete Denmark squad
Olsen was present when Okore helped FC Nordsjaelland win the Danish league title for the first time ever on Wednesday, while Pedersen impressed with FC Groningen.
Olsen named his initial squad of 20 on 16 May and added Manchester United goalkeeper Anders Lindegaard on Sunday.
The team will travel to Hamburg on Friday, where they will play a friendly against Brazil the following day. Denmark are drawn in Group B for EURO 2012 with the Netherlands, Portugal and Germany.