Members of Rapid Action Battalions (Rab) have arrested four more people in connection with the vandalism and torching of buses during protests over the death of student Md Mainuddin in a bus accident in Rampura. The arrestees were identified as Monir Hossain, 54, Md Hridoy Hasan Parvez, 19, Md Alaudding Sifat, 25, and Md Naeem Hasan Mir, 24. ANM Imran Khan, Assistant Director (ASP) of Legal and Media Wing of Rab, said the mastermind Monir and three of his associates were arrested from the capital's Rampura and Cumilla district on Tuesday night in a drives conducted by a team of the intelligence branch of Rab headquarters and Rab-3. During primary interrogation, the arrestees confessed to their involvement with the crime. Read: 3 arrested in city with 40,000 pcs of yaba The arrestees deliberately plotted the sabotage using a possible incident in Rampura centering the Gazipur incident as per the direction of Monir. This gang was prepared for sabotage for the purpose of abusing the ‘half fare’ issue for running students. There are seven cases of sabotage with explosives against Monir. He is an identified terrorist and an agent of anti-state conspirators, said a media release issued by Rab HQ. Legal processes are underway in this regard, the release added. Earlier, police arrested Swapan Reza ,25, and Shahid Bepari ,22, over the incident. On November 29, an angry mob set fire to at least eight buses and vandalised several others in Dhaka's Rampura area after the student was killed on that day.