According to police, the builder cum RTI activist's body was found in decomposed status near Tamini Ghat area of the city.
Shirsath, a resident of Pune, went missing on January 30, following which, his family members filed a complaint.
The body has been sent for a post mortem and a case has been registered under Indian Penal Code sections 302 (murder) and 201 (causing disappearance of evidence of offence).
Further investigation is underway.
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