Syria's official news agency SANA reported that terrorists had detonated an explosive-rigged vehicle that was parked near a telecommunication center in the Kurdish-held town of al-Qahtaniya in the northeastern province of Hasakah on Wednesday.
The news agency added that a number of people were killed during the attack, including three children.
The so-called Syrian Observatory for Human Rights, a pro-opposition monitoring group, put the death toll at five, confirming that three children were among the casualties.
Daesh terrorist group claimed responsibility for the blast on its Telegram channel.
Daesh has been almost purged from entire territories it used to control in Syria and neighboring Iraq. However, sporadic attacks by the group are still reported in the two countries.
Syria, gripped by a militant war since 2011 that has left hundreds of thousands killed, has managed to take back control of many territories from Daesh and other terrorist groups. The devastating war has also displaced millions of people inside the Arab country and into other places.