Kishan Meghwal alias Kanahaiya (28) also confessed to being in an illicit relationship with the 35-year-old victim, they said.
Meghwal, a resident of Jarkhoda village was yesterday arrested from his village, Bundi DSP Samandhar Singh said.
The accused allegedly had an illicit relationship with Dropadibai Aerwal, who worked as a daily wage labourer in Gumanpura village, the DSP said adding, the woman, a mother of three, left home with her jewellery to stay with Meghwal.
Meghwal choked her to death on October 9 when she refused to return to her husband and dumped her in the bushes near Balaji temple, he said.