On 4 July 2021, Public Security Bureau (PSB) in Dartsang Township in Serthar County carried out an investigative campaign in the area and searched individual mobile phones of local Tibetans through phone numbers that had been registered with identity cards. The records of identity cards and linked phone numbers are kept at the local security department. During the search operation, the PSB arrested four Tibetans, including a local village leader, under suspicion of possessing ‘politically sensitive’ content. But currently, the names of the detainees and their whereabouts remain unknown
