The Sree Narayana Guru Mandapam with a statue of the Guru and a Muthappan shrine under a tree at Kakkad here were vandalised in the early hours of Monday.
The glass case covering the statue of Sree Narayana Guru was broken in suspected stone-pelting,
The miscreants also damaged the Muthappan shrine by destroying the glass case. The portrait of Muthappan inside the case was found on the ground.
The mandapam and shrine are managed by Kakkad-Thulichery Sree Bhakthi Samvardhini Yogam temple festival committee.
Committee president Karayi Divakaran said that the mandapam and the shrine had not faced such attacks in the past.
The committee organised a protest in the afternoon in which members of all political parties were present including CPI(M) MLA, K. K. Narayanan, and V.P. Vampan of the Indian Union Muslim League.
Glass case covering the statue of Guru was found broken.