The death toll was initially placed at 13. Later, Turkish officials and the opposition group said it had risen to 14.
This was not the first time the violence in Syria has spilled across the border to claim Turkish lives. But the border blast was clearly the deadliest incident in Turkey since the Syrian uprising began 23 months ago.
In October, five Turkish civilians were killed when Syrian troops shelled the Turkish border town of Akcakale. And in June, Syrian anti-aircraft fire brought down a Turkish military reconnaissance jet over the Mediterranean Sea.
When fighting erupts across the border, Turkish authorities periodically close schools that are close to Turkish territory.
The Turkish government has been reluctant to call Monday's explosion an act of terrorism.
Recep Tayyip Erdogan, Turkey's often fiery prime minister, made a restrained, somewhat ambiguous statement to the Turkish media Monday.
"This event illustrates how on target we have been in terms of our sensitivity to both terrorism and to the events in Syria. We will not make concessions on either front," Erdogan said.
Turkey has hosted more than 170,000 Syrian refugees since Syria's uprising and subsequent government crackdown began in March 2011.
As violence intensified inside Syria, the Turkish government turned its back on Syrian president Bashar al-Assad and threw its support behind the Syrian opposition.
Turkey has provided medical care and financial and logistical support to Syrian rebels. The Turks have also permitted shipments of weapons and ammunition to cross the border to rebels inside Syria.