Central Bureau of Investigation (CBI) filed the closure report before Ernakulam Chief Judicial Magistrate on the investigation into the source of explosives used by miscreants during the riot which led to police firing at near Thiruvananthapuram in 2009. Satish Dagar, CBI ASP, Mumbai unit, filed the report recommending closure of the investigation.
In the closure report, the investigation officer stated that though explosives were from Amem Explosives Private Limited, Nagpur, the investigation could not establish how they arrived in Cheriyathura and the people behind it. CBI submitted that they have conducted a thorough investigation but no links could be established between the explosives and the riot that took place at the time. They also interrogated several suspects including police officers, but they seem unaware of the explosives.
Six persons from the nearby Beemapally area were killed and 39 others injured in the police firing on May 17, 2009 and, a few days after the riots, the forensic team recovered highly explosive Neogel 90 from the area. Soon after the riot, a case was registered against the police officials including assistant commissioners and circle inspectors. It was in November 2011, that the case on explosives was handed over to CBI.