At least 25 Turkish soldiers were injured and seven were reported missing Saturday after an artillery shell exploded "accidentally" at a military base in the country's southeast, authorities said.
Twenty-five soldiers were hospitalised, but officials did not give details on the severity of their injuries. Seven soldiers were missing, the ministry said.
The government has launched an investigation.
Turkey's predominantly Kurdish southeast has seen years of violent fighting between the Turkish army and the Kurdistan Workers Party (PKK), classified a "terrorist" group by Ankara and its Western allies. Turkey also regularly bombs PKK bases in northern Iraq.
After a brief truce, fighting resumed in 2015, shattering hopes for a peaceful resolution to a conflict that has claimed more than 40,000 lives since 1984.