The suspect, identified only as Satish, was also holding a machete, and had travelled 12.5 miles (20km) by bike to hand himself in, reports The Times Of India.
In footage taken by someone at the station, in Ajjampura, southern India, Satish is heard telling the officers: “This is my wife, sir, I gave her all the love I could.”
At that point, “he pulls the woman’s head out of the plastic bag and holds it up, telling officers that his wife, Roopa, had cheated on him”, reports Sky News.
“I saw her with that guy near the plantation, I killed her, but that guy ran away. I couldn’t kill him though,” said Satish, a 35-year-old taxi driver, according to local media reports.
In the video, he then continues “complaining that she had chosen his rival, Sunil, over him, despite the man apparently having a criminal record and being employed as a manual worker”, says the Daily Mail.
Satish told police that his wife had even taken out a loan for 300,000 INR (£3,200) and given the money to her lover.
Officers launched a formal murder investigation after taking a statement from him. They said that Satish had been remanded in custody after showing them where he had left the rest of his wife’s body.
A police spokesperson said: “Generally, in the Ajjampura area, whoever commits murder surrenders to the police but for someone to walk in and place a head on the sub-inspector’s table was something new for us.”