Gurugram, Feb. 10 -- An undertrial terror attack suspect was bludgeoned to death in his sleep by an inmate using a sharp stone inside Neemka district jail's high-security ward in Faridabad early Monday between 1.30am and 2am, police said. The deceased was identified as Abdul Rehman, 20, from Milkipur in Ayodhya, Uttar Pradesh. He had been lodged in the ward with two other inmates - Arun Chaudhary, alias Abbu Jatt, 24, of RS Pura, and Mohammad Shoiab, 23, of Sophia, both in Jammu and Kashmir - about 15 days ago. Previously, all three, facing trial under the Unlawful Activities (Prevention) Act, were kept in separate wards. Ashok Kumar, assistant commissioner of police, Tigaon, said Chaudhary inflicted severe head injuries. "Hearing commotion, Shoiab got up and raised an alarm, after which prison authorities rushed inside the ward and immediately provided medical help to Rehman, but he died on the spot." Police stated Rehman and Chaudhary had a heated argument shortly after being lodged together, suspected to have led to the murder. Rehman was arrested on March 2, 2025, by a joint team of Gujarat ATS, Haryana STF, and the Intelligence Bureau from Pali in Faridabad on input he was planning a terror attack on the Ram Mandir. Two military-grade hand grenades, detonators, and phone videos with temple details were recovered. According to police, Rehman was a member of an Al-Qaida in the Indian Subcontinent (AQIS) module headed by Maulana Abdul Rehman of Odisha, an alleged former associate of an IC-814 hijacker, police said. Investigators said the module was also linked to Jaish-e-Mohammed (JeM) operative Salim, who was allegedly planning an attack on the Ram Mandir and was killed along with two associates in an encounter in Lucknow in April 2021. On the complaint of prison authorities, an FIR under section 103(1) (murder) was registered against Chaudhary at Sadar Ballabgarh police station, and a judicial inquiry has been launched, the ACP said. Investigators said a sharp piece of stone used in the attack was recovered, and CCTV footage is being scanned to determine how it was brought inside the high-security area. Police said all criminal cases against Chaudhary are in Jammu and Kashmir and Punjab, and he was shifted to Faridabad jail from Kathua in October 2024. Police said, Shoiab, also accused in a terror case in J&K, was shifted to Faridabad over security reasons. Chaudhary, shifted from Kathua jail in October 2024, had shot dead Akshay Sharma in December 2023 and was arrested in Amritsar after an exchange of fire injuring a constable. Rehman's family has been alerted and his body preserved for autopsy....