Mark Mazower, Salonica, City of Ghosts: Christians, Muslims and Jews 1430-1950

Hasan Pasha also gave the green light for Turks and Greeks to take whatever action they pleased against any Albanians they found: killing them was not a crime. Continuing his march, he executed all the Albanians he encountered, setting fire to a monastery where other were hiding and offering five sequins for every Albanian head brought him.