DUBAI - State security men on Sunday detained an Islamist activist who had criticized the United Arab Emirates' security apparatus, his son said, amid a crackdown on Islamists in the Gulf Arab country.

Ten plain-clothes men, who identified themselves as security officials, arrived a t a mosque in the northern emirate of Ras al-Khaimah after dawn prayers and took Saleh al-Dhufairi, the general manager of an Islamist organization, the Holy Koran Foundation, his son told Reuters.

"They ran into the mosque and took my father to the car outside. I asked them who they were and one said they were police, while another said they were from the state security but they had no arrest warrants and didn't show us any identification," Hassan al-Dhufairi said.

"They took him with them and I tried to open the door of the car but it was locked and they drove away, we don't know where they took my father," he said.

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