Mark Lippert rushed to hospital; identity of arrested suspect still unknown.
300 more Syrians have entered Turkey on Sunday after fleeing clashes in their country.
300 Syrians entered Turkey via Yayladagi town of southern province of Hatay.The number of Syrians in camps in Turkey is more than 30,000.
At least 50 regime soldiers killed when a bomb went off in a tunnel near an intelligence facility in Aleppo.
US have voiced concerns about Iran's human rights record and ties to Hezbollah and the Assad regime.
The election commission says that the device would help curb malpractices such as use of fake voter cards during the polls.
In a phone conversation with Arab League Assistant Secretary-General Mohamed Sobeih, Haniyeh described relations between Hamas and Egypt as "strategic."