During the Austro-Turkish War in the late 17th century, Pristina citizens under the leadership of the Catholic Albanian priest Pjetër Bogdani pledged loyalty to the Austrian army and supplied troops. He contributed a force of 6,000 Albanian soldiers to the Austrian army which had arrived in Pristina. Under Austrian occupation, The Fatih Mosque (''Mbretit Mosque'') was briefly converted to a Jesuit church. Following the Austrian defeat in January 1690, Pristina's inhabitants were left at the mercy of Ottoman and Tatar troops who took revenge against the local population as punishment for their co-operation with the Austrians. A French officer traveling to Pristina noted soon afterwards that "Pristina looked impressive from a distance but close up it is a mass of muddy streets and houses made of earth".