The Crime Branch detained a Youth Congress leader in connection with the attack on the AKG Centre, the State headquarters of Communist Party of India (Marxist) [CPI (M)], on Thursday.
The Kerala Police have achieved a breakthrough in the case nearly three months after the incident that had escalated political tensions in the State.
Also read: Attack on AKG Centre scripted by CPI(M), says KPCC president K. Sudhakaran