In 1153, Arab geographer Burizi crossed the country, and recorded the place of "Atrubi" at the site of old Turres, describing it as situated by a small river which arrives from the Serbian mountains and was a tributary of the Morava. In 1182–83 the Serbian army led by Grand Prince Stefan Nemanja conquered Byzantine territories from Niš to Sofia. The Serbians were expelled by the Byzantine emperor Isaac II Angelus in 1190 Pirot and Bela Palanka (Remesiana) were not mentioned as they were in ruin since the rebellions in the 940s. Since the end of the 12th century the region of Pirot was part of the restored Bulgarian state. The region was for some time in the domains of Bulgarian noble sevastokrator Kaloyan. In 1331-1332 Church of St. Petka in Staničenje was built - at the time of Bulgarian Emperor Joan Asen (Ivan Alexander) and Vidin master Belaur.