(Reuters) - Islamic State militants have abducted at least 90 people from Assyrian Christian villages in northeastern Syria, a monitoring group that tracks violence in Syria said on Tuesday.
The British-based Syrian Observatory for Human Rights said the militants carried out dawn raids on rural villages inhabited by the ancient Christian minority west of Hasaka, a city mainly held by the Kurds.
Syrian Kurdish militia launched two offensives against the militants in northeast Syria on Sunday, helped by U.S.-led air strikes and Iraqi peshmerga.
This part of Syria is strategically important in the fight against Islamic State because it borders territory controlled by the group in Iraq, where it last year committed atrocities against the minority religious Yazidi community.
Many Assyrian Christians have emigrated in the nearly four-year-long conflict in which more than 200,000 have people have been killed. Before the arrival of Kurds and Arab nomadic tribes at the end of the 19th century, Christians formed the majority in Syria's Jazeera area, which includes Hasaka.
Sunday's offensive by Kurdish YPG militia reached within 5 km (3 miles) of Tel Hamis, an Islamic State controlled town south east of Qamishli, the Observatory said.
At least 14 IS fighters died in the offensive, which involved Assyrian fighters, and eight civilians were also killed in heavy shelling by the Kurdish side which seized several Arab villages from Islamic State control, the monitoring group said.