Clutching a bloodstained napkin used by her brother just before his death, a young Syrian Kurdish woman mourned for the 23-year-old killed while defending the key town of Kobane from Islamic State insurgents.

The young man was killed fighting alongside People's Protection Units (YPG) against Islamic State (IS) jihadists for control of the mainly-Kurdish Syrian town, just over the Turkish border.

Turkey detained dozens of Kurds who crossed the border from the besieged Syrian town of Kobane on suspicion of having links with the outlawed Kurdistan Workers' Party (PKK), officials said Wednesday.

A local official in the Turkish border town of Suruc told AFP around 265 people were taken into custody for fingerprint identification after they crossed from the mainly Kurdish town under attack from IS jihadists.