A case under section 307 of IPC & ST/SC Atrocity Act has been registered.
Adding, "After she rejected him, he didn't want her to accept anybody else also".
The empathetic incident took place earlier in the week in Lalaguda area of the city.
According to reports, the accused called the victim at the spot, where he poured kerosene on her and set her on fire.
Soon after committing the heinous act, the accused fled from the spot.
Passersby took quick cognisance and put out the fire.
The woman has suffered 50 percent burns and her condition is said to be critical.
The investigation is underway. (ANI)