In February 1904 he went to Athens to meet Pavlos Melas, so that the defence against the IMRO could be organised, and they started acting in the region of Florina.

Moreover, he informed the Greek consul of Bitola, Spyridon Levidis, that he was willing to form an armed group thirty-strong.

Lakis Pyrzas fulfilled the wish of his friend and leader and so he went to Athens, where he lived until June 1904 working for the Hellenic Macedonian Committee.

He returned to Macedonia using Pavlos Melas's nom de guerre, Mikis Zezas, under the command of Georgios Tsontos (Kapetan Vardas).

After a dispute with him, Pyrzas was forced to retire; he went to Egypt and returned to Florina after the Hellenic Army liberated it in 1912.