Saibaba was arrested by Gadchiroli police of Maharashtra earlier this month on the charge of links with Naxals and for providing them logistical support and helping them in recruitment.
In a statement here, RWA demanded his immediate release.
His arrest, carried out in "illegal manner", and branding him as a Maoist exposed the state's "anti-people" strategy, it added.
The association has also planned seminar in the city tomorrow on the topic 'Democratic Rights- Globalisation - Hindutwa'.