JAISALMER: Four postal department officials based out of Pokhran and Balotra in Jaisalmer were on Monday arrested for allegedly spying for Pakistan's Inter-Services Intelligence (ISI). They are said to be passing on Army-related letters and other documents to a Pakistani agent.The arrests were made after joint raids at post offices in Pokhran and Balotra by the Intelligence Bureau (IB), CID Border Intelligence and the local police. Among those arrested is Kishanpal Singh, post master at Pokhran's chief post office.The accused were allegedly passing on confidential information about Army, like those related to war exercises, addresses of the army men, etc, to ISI. War exercises are frequently held at the Pokhran field firing range.Jodhpur zone SP (CID) Santosh Chalke confirmed that post master Singh and computer operator Narendra Sharma from Pokhran post office were arrested under Official Secrets Act for sending sensitive information to an ISI handler. "Two employees of the Balotra main post office were also arrested. Also, post inspector Vasu Dev Meghwal has been detained. A woman named Pramila was released as preliminary investigations," he said.Jaisalmer SP Rajiv Pachar said Singh has accepted that he was forwarding information about the Army to an ISI handler for the past three to four months. "Further investigations would reveal how much money they received for this," he said.Prior to this, two months ago Patwari Gordhan Singh Rathore was arrested in the area on charges of spying for ISI. More than 20 SIM cards, registered in different names, were recovered from him. He was using these to share information across the border.