Britain on Thursday condemned Syria's shelling of Turkish territory as an "outrageous act" and warned that it must not happen again, dpa reported.
"This was an outrageous act. We demand that the Syrian regime avoid any repetition of today's incident on the border with Turkey," Foreign Secretary William Hague said in a statement.
"The events are a stark reminder of the deteriorating situation in Syria, the dangers it presents to the wider region, and the need or an urgent resolution of the United Nations Security Council," he said.