Islamic State fighters have attacked the Syrian city of Kobane, months after being driven out in a symbolic battle that made international headlines.
They detonated car bombs and launched an assault. Kurdish media say at least 50 civilians have been killed, including 20 in a nearby village.
IS has recently suffered a string of defeats to Kurdish forces.
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But in another attack on Thursday, it seized parts of the key north-eastern city of Hassakeh.
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