One soldier was killed and 47 people were injured in an explosion overnight in south-eastern Turkey's Diyarbakir province, the country's military said in a statement.
Of those injured in the attack on a gendarme headquarters in Hani district, 39 were soldiers. The military pointed the finger at the armed Kurdistan Workers' Party (PKK), which the state sees as a terrorist group.
The explosion was caused by a car bomb, Dogan news agency reported, the latest of several in the region.
Fighting has intensified in Turkey's mostly Kurdish south-east since a ceasefire broke down in July between the state and the PKK, amid mutual recriminations, after peace talks stalled.
Security forces have since stepped up operations to flush out militants.
Turkish officials have indicated that no negotiation process will be restarted with the PKK, which is demanding greater autonomy for the Kurdish minority.
Hundreds of people, including civilians, have died in the fighting, which has also caused widespread destruction to property.