Kurdish militants in Turkey detonated a car bomb that killed 10 soldiers and eight civilians on Sunday, Turkish prime minister Binali Yldrm said.
Officials said 27 other people were injured and hospitalized. The bombing was attributed to the Kurdistan Workers' party, or PKK.
The attackers reportedly shot at soldiers at the checkpoint before detonating five tons of explosives in a minivan at about 9:45 a.m. The resulting explosion left a crater that was 50 feet wide and 23 feet deep.
This tweet shows raw video of the scene.
I would like to remind all friendly countries that there is great need to take a common stance and display solidarity against terrorism.
Turkish officials imposed a temporary blackout on covering the attack, citing national security reasons.
Turkey has been rocked by a wave of bomb attacks since last summer that have killed hundreds of people and been blamed on either the PKK or ISIS.
Fighting between the PKK and the state security forces resumed last year after the collapse of a fragile 2 1/2-year cease-fire. Since then, more than 600 Turkish security personnel and thousands of PKK militants have been killed in clashes, according to the Anadolu Agency.
Here's another look at the scene of the bombing.
The Associated Press contributed to this report.