At least four explosions hit government-held parts of Syria on Monday in the cities of Tartous and Homs and in the countryside outside Damascus, state media and a monitor said.
Two simultaneous, violent explosions hit the Arzouna bridge area at the entrance to the government-held northwestern coastal city of Tartous, the United Kingdom-based anti-government Syrian Observatory for Human Rights and state news agency SANA said.
A car bomb struck the city of Homs, SANA said. The Observatory said it hit an army checkpoint and two officers were killed.
State television also said there was an explosion along the al-Sobura-al-Bija road outside Damascus.
The explosions come as U.S. Secretary of State John Kerry and Russian Foreign Minister Sergei Lavrov failed to strike a deal for a ceasefire in Syria after the two met on the sidelines of the G20 summit in the eastern city of Hangzhou, China.