In Coimbatore, Hindu and Muslim organisations call for bandh but for different reasons.

In Coimbatore, for the single related issue, both Hindu and Muslim organisations have called for a dawn to dusk bandh today, but for separate reason, The Covai Post reported. 

Hindu Munnani and PFI_1&n 
According to media reports, the Hindu organisation namely Hindu Munnani, called for the bandh to protest against the attack on its district secretary Madukkarai Anand. Munnani President, Kadeshwara Subramanian blamed the hand of some Muslim outfit behind the attack on Madukkarai Anand.
Two motorcycle miscreants attacked Anand with iron rods, knives and swords while he was returning home after attending a pro CAA rally staged at Gandhipuram, a suburb in the communally sensitive Coimbatore city. “He was seriously injured and was admitted to a private hospital where his condition continues to be serious. Our suspicion is centred on activists of Islamic organisations which have been demonstrating against the CAA,” said J S Kishore Kumar, Tamil Nadu Secretary, Hindu Front.
By denying the above allegations, Islamic organisations including Social Democratic Party of India (SDPI) and Popular Front of India (PFI) called for a bandh and charged that the Hindu leaders were deliberately blaming the Muslims for the attack.
The police have registered an FIR and investigation is on to find out the culprits behind the attack on Anand.
This is the first attack on Hindu activists after the eruption of widespread agitation against the CAA staged by various Islamic outfits. The State is witnessing rallies and demonstrations supporting and opposing the Citizenship Amendment Act (CAA). Barring the unpleasant incidents in Chennai in which more than six policemen were grievously injured by a mob staging demonstration against the CAA.