# Kolkata billboard removal investigation > Live situation record from CLSTR: https://clstr.news/situations/kolkata-billboard-removal-investigation > Updated: 2026-09-05T13:47:19.000Z. Sources: 6. Developments: 2. An investigation is underway in Kolkata regarding a clash on August 27 involving the removal of an allegedly unauthorized billboard from the Camac Street office of Trinamool Congress MP Abhishek Banerjee. Initially, Rajya Sabha MP Derek O’Brien appeared at the Shakespeare Sarani police station for questioning after receiving a summons. Legal representatives for Abhishek Banerjee raised concerns that the First Information Report (FIR) had not been made available on the city police website. As the investigation progressed, three separate FIRs were registered by officers from the Shakespeare Sarani and Park Street police stations, as well as a Kolkata Municipal Corporation (KMC) official. Sumit Roy, an aide to Abhishek Banerjee, has been summoned for multiple rounds of questioning to address these complaints. Parallel to the police investigation, the West Bengal Fire and Emergency Services Department conducted an audit of the premises, subsequently ordering the evacuation of the seventh and eighth floors due to inadequate fire-safety measures. ## Timeline ### 2026-09-05: Sumit Roy summoned by Kolkata Police over billboard clash Kolkata Police have summoned Sumit Roy, aide to Trinamool Congress leader Abhishek Banerjee, for further questioning regarding a clash over an allegedly illegal billboard at the party's Camac Street office. 2 sources. https://clstr.news/cluster/sumit-roy-summoned-by-kolkata-police-over-billboard-clash ### 2026-08-31: Derek O'Brien questioned in Kolkata Camac Street case Trinamool Congress MP Derek O'Brien has appeared for questioning in Kolkata regarding the obstruction of municipal officials at Abhishek Banerjee's office. 4 sources. https://clstr.news/cluster/derek-obrien-questioned-in-kolkata-camac-street-case --- Cite as: Kolkata billboard removal investigation. CLSTR, https://clstr.news/situations/kolkata-billboard-removal-investigation