Trivandrum, Mar 22 (ANI): The workers of Sambhava Mahasabha on Tuesday staged a protest outside the Secretariat in Kerala's capital city Trivandrum. The protestors were demanding a Central Bureau of Investigation (CBI) inquiry into the suspicious death case of Malayalam actor Kalabhavan Mani. Mani, 45, succumbed to a cardiac arrest due to the presence of poisonous substance in his body earlier this month.