The diplomatic row between the Netherlands and Turkey escalated further on Saturday night when police prevented a Turkish minister from entering the consulate in Rotterdam and escorted her back to Germany after a standoff lasting several hours.

Riot police with water cannon were drafted in to break up a demonstration by some 500 people who had gathered close to the embassy. The building itself had been sealed off earlier on the orders of city mayor Ahmed Aboutaleb.

It is unclear if there were any arrests, but calm was largely restored by around 3am, eyewitnesses said.

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