Thirteen people, mostly civilians, were killed Tuesday in two bombings targeting the city of Raqqa, the stronghold of the former Islamic state in Syria, the Syrian Observatory for Human Rights said.
Syria´s Kurdish Democratic Forces control the northern city of Rigga since the Islamic state was expelled from it in October 2017.
"Two explosions, one with an improvised explosive device and one with a booby-trapped vehicle, targeted the crowded street of light," said Rami Abdul Rahman, director of the Syrian Observatory.
The attacks resolved in "the killing of nine civilians and four members of the Syrian Democratic Forces," according to Abdul Rahman, who indicated that the output is likely to rise due to the presence of wounded in serious cases.
No one has yet claimed responsibility for the bombings.
The city of Raqqa and other areas that were under the control of the extremist organization, the bombings and attacks and assassinations, some of which adopt the organization, which is still active in dormant cells in the areas controlled by the Syrian Democratic forces, supported by the coalition led by Washington.
Earlier on Tuesday, a suicide bombing near the town of al-Shaddadi in the south-eastern Hasaka countryside as a coalition convoy passed without causing any casualties, according to the observatory.
After taking control of Baguoz, the last pocket of the organization last month, the Syrian Democratic Forces reported a "new phase" in the battle against it, in coordination with the International Coalition, targeting its "sleeper cells".
The international coalition, which supports Syria´s democratic forces, has estimated the number of fighters of the extremist organization "those who have moved to secret action" in thousands.
The organization maintains a wide spread in the vast Syrian desert stretching from the east of Homs to the Iraqi border and its ability to move dormant cells in the areas from which it was expelled. It carries out kidnappings, placing bombs and carrying out assassinations and suicide attacks targeting both civilian and military targets.
Experts stress that the demilitarization of the Islamic state after controlling the Baguoz does not mean the end of the danger it represents, warning of the possibility of resorting to indiscriminate attacks to inflict the greatest number of casualties in the next stage.
