ISTANBUL -- A suicide car bomber set off an explosion Saturday that demolished a public bus transporting off-duty soldiers in Turkey's central province of Kayseri, killing 13 troops and wounding 56 other people, authorities said.
Saturday's blast occurred a week after a car bomb attack claimed by Kurdish militants killed 44 people, mainly riot police, and wounded more than 150 others near a soccer stadium in Istanbul.
Interior Minister Suleyman Soylu said the identity of the Kayseri attacker was known and that seven people had been taken into custody in connection with the attack. Police were searching for five others.
Prime Minister Binali Yildirim said the suicide bomber ambushed a commando brigade on weekend leave in the city of Kayseri.
The Turkish army said 48 troops were among the wounded in Saturday's "treacherous attack." The state-run Anadolu Agency said the explosion at the entrance gate to Erciyes University hit a bus transporting off-duty soldiers.
Speaking in Kayseri, Health Minister Recep Akdag told reporters that 56 people had been wounded in the attack, including four who were in critical condition.
Images taken moments after the explosion showed a smoking public bus, still in flames, with its windows blown open and its interior blackened.
There was no immediate claim of responsibility, but the statements of top officials suggested suspicion was focused on the outlawed Kurdistan Workers' Party, which Ankara and the West consider a terrorist organization. Kurdish militants have claimed multiple attacks against soldiers and police across Turkey this year in violence that also has caused many casualties among civilians.
"Turkey is under a combined attack by terrorist organizations, especially the divisive terrorist organization," President Recep Tayyip Erdogan said in a statement Saturday, referring to the Workers' Party.
Turkey has fought the Workers' Party for decades in a conflict that has claimed tens of thousands of lives. The collapse of a 2½-year cease-fire in July 2015 set the stage for a violent new chapter and ushered in vast security operations in Turkey's predominantly Kurdish southeast.
Turkey is also at odds with Western-backed Kurdish factions fighting against Islamic State extremists in neighboring Syria and Iraq. Turkey views these groups as extensions of the Workers' Party.
"We know that these attacks we have endured are not unrelated to happenings in Syria and Iraq, or even our economical fluctuations," Erdogan said.
A state of emergency was declared after a botched July 15 coup attempt in Turkey and remains in force. The Turkish government has detained tens of thousands of people and fired tens of thousands of others for what it says are ties to a cleric-led movement that it blames for the attempted coup -- a claim the group denies.
As usual with attacks in Turkey, the prime minister's office imposed a temporary blackout on coverage of Saturday's explosion and urged media outlets to refrain from publishing anything that may cause "fear in the public, panic and disorder and which may serve the aims of terrorist organizations."
Information for this article was contributed by Ayse Wieting, Bulut Emiroglu and Neyran Elden of The Associated Press.
A Section on 12/18/2016