An immigration detention centre in Bangkok's Sathorn area, where it is believed that a group of Uyghurs are being held, is pictured. (AFP pic)BANGKOK: Five Uyghurs detained in Thailand since 2014 are subject to Chinese arrest warrants, the kingdom's security chief said Wednesday, adding that a court would decide if they would be returned to China.

Human rights groups have raised concerns about the men - members of the Muslim minority group who activists say are persecuted in China - after two of them were pardoned by Thailand last month.

They were among more than 300 Uyghurs held in Thailand in 2014, most of whom have since left - including a group of around 40 sent last year to China, a move that sparked international outrage.