Two car bombs exploded in a Turkish town near the border with Syria on Saturday, killing around 40 people and wounding 100 others, officials said. Turkey's deputy prime minister said Syria's intelligence and military were "the usual suspects" behind the bombings, but said authorities were still investigating the attacks.
The blasts, which were 15 minutes apart, raised fears that Syria's brutal civil war violence was crossing into its neighbor.
One of the car bombs exploded outside the city hall while the other went off outside the post office in the town of Reyhanli, a main hub for Syrian refugees and rebel activity in Turkey's Hatay province, just across the border. Images showed people frantically carrying victims through the rubble-strewn streets to safety.
Deputy Prime Minister Bulent Arinc said about 40 people were killed and 100 others wounded in the blasts and linked them to Syria. There was no immediate information on the identities or nationalities of the victims.
"We know that the Syrian refugees have become a target of the Syrian regime," he said. "Reyhanli was not chosen by coincidence."
"Our thoughts are that their mukhabarat (Syrian intelligence agency) and armed organizations are the usual suspects in planning and the carrying out of such devilish plans," he said.
Arinc said Turkey would "do whatever is necessary" if proven that Syria is behind the attack.
Prime Minister Recep Tayyip Erdogan earlier also raised the possibility that the bombings may be related to Turkey's peace talks with Kurdish rebels meant to end a nearly 30-year-old conflict.
Syrian mortar rounds have fallen over the border before, but if the explosion turns out to be linked to Syria it would be by far the biggest death toll in Turkey related to its neighbor's civil war.
Syria shares a more than 500-mile border with Turkey, which has been a crucial supporter of the Syrian rebel cause. Ankara has allowed its territory to be used as a logistics base and staging center for Syrian insurgents.
"Those who for whatever reason attempt to bring the external chaos into our country will get a response," he said.
The main Syrian opposition group, the Syrian National Coalition, condemned the "terrorist attacks" in Reyhanli, saying it stands together with the "Turkish government and the friendly Turkish people."
The coalition sees "these heinous terrorist acts as an attempt to take revenge on the Turkish people and punish them for their honorable support for the Syrian people," it said.
Reyhanli is a center for aid and alleged weapon trafficking between Turkey and Syria, as well as for Syrian rebel activity. Apart from refugees living in camps, many Syrians escaping the civil war have also rented houses in the town.
The explosions came days before Erdogan is scheduled to travel to the U.S. for talks, which are expected to be dominated by the situation in Syria.
"This ... will increase the pressure on the U.S. president next week to do something to show support to Turkey when Erdogan visits him in Washington," said Soner Cagaptay, an expert on Turkey at the Washington Institute. "Washington will be forced to take a more pro-active position on Syria, at least in rhetoric, whether or not there is appetite for such a position here."
Abdullah, a Reyhanli resident, told The Associated Press he heard two strong explosions at about 1 p.m. "The bombs were very powerful," he said by telephone.
The frontier area has seen heavy fighting between rebels and the Syrian regime. In February, a car bomb exploded at a border crossing with Turkey in Syria's Idlib province, killing 14. Turkey's interior minister has blamed Syria's intelligence agencies and its army for involvement.
Four Syrians and a Turk are in custody in connection with the Feb. 11 attack at the Bab al-Hawa frontier post. No one has claimed responsibility, but a Syrian opposition faction accused the Syrian government of the bombing, saying it narrowly missed 13 leaders of the group.
In that bombing, most of the victims were Syrians who had been waiting in an area straddling the frontier for processing to enter Turkey.
Tensions flared between the Syrian regime and Turkey after shells fired from Syria landed on the Turkish side, prompting Germany, the Netherlands and the U.S. to send two batteries of Patriot air defense missiles each to protect their NATO ally.
Associated Press writer Bassem Mroue in Beirut contributed to this report.