On the internet one finds, translated "Cupolas [Kümbetler] are monumental mosques built during the Seljuk period. In the work named Revzat-ül Ahbar, it is understood that this monumental mosque was built after the Seljuk Naval Minister Sadreddin Hodja Yunus was killed by Cimri and Karaman's son Mehmed Bey in 673 AH 1274 Gregorian." and "The square-planned, single-spaced cupola, covered with a dome, was converted into a mosque by adding a minaret." It is a strange minaret, as it seems to be boiler-plated.