At least 14 people were killed, 25 were wounded in suicide attack on a wedding in Hasakah, northern Syria late Monday.
A police source in the city said the initial toll also included 55 injured. The Syrian Observatory for Human Rights said at least 14 were killed in the blast, adding the number was expected to rise with many of the wounded in critical condition.
The city is mainly in the hands of the PKK's Syrian wing the YPG after it evicted the Syrian regime army last August and leaving them with a symbolic foothold in a security zone in the center of the city.
The YPG have expanded their control of the city despite the bombing of several locations by Syrian jets. Thousands of civilians in the ethnically mixed city, including members of the Christian community, have fled to villages in the countryside as the fighting intensified.
Hasakah's population, swelled by displaced Syrians fleeing areas that fell under Daish control, is broadly divided along ethnic lines, with Kurds mainly in the city's eastern neighborhoods and Arabs in the southern parts.
Ankara has frequently voiced its concern over YPG activity along the Turkish border and has been rigid in its stance to not allow the PYD militant group to found any de facto Kurdish state in northern Syria. Turkey claims the PYD enjoys close connections with the PKK terrorist organization, including militant and ammunition support through underground tunnels.