Turkish authorities often use the term "neutralized" in statements to imply the terrorists in question surrendered or were killed or captured.
In a written statement, the ministry said gendarmerie forces carried out a counter-terrorism operation in Siirt's rural areas.
Security operations are under way, it added.
Though the statement did not mention a specific terrorist group, Turkey has long been conducting operations against the PKK terrorist organization in the region.
In its more than 30-year terror campaign against Turkey, the PKK -- listed as a terrorist organization by Turkey, the U.S. and the EU -- has been responsible for the deaths of 40,000 people, including women, children and infants. The terrorist YPG is the PKK's Syrian branch.