The Bombay High Court while slapping a fine of Rs 5 lakh on a tenant for 'obstructing' redevelopment of a nearly 83-year-old building, observed that often such petitions by tenants amount to 'sophisticated form of extortion' and thus such 'obstructionist' behaviour of the tenants must be deterred.A division bench of Justices Ajay Gadkari and Kamal Khata noted that filing petitions …