Hazaribag (Jharkhand), Six people, including the father of one of the victims, were arrested for allegedly killing a couple in Jharkhand's Hazaribag district, a senior police officer said on Sunday.

Ishwar Mehta (59) and his younger son Bablu were among those arrested for the brutal murder of Ishwar's elder son Rahul Kumar (30) and his wife Puja Yadav (28) on the night of June 15-16, SP Arvind said Kumar Singh.

According to the police, Rahul had gone to Delhi a few years ago to prepare for the civil services exam, where he met and fell in love with Puja from Azamgarh, Uttar Pradesh, who was also preparing for the UPSC exam. The couple lived together in Delhi before returning to Rahul's native village of Korha in Hazaribag about five years ago, where they ran a successful coaching centre, police said.

Ishwar, a moneylender of Ichak, was enraged to see Rahul returning with Puja, who belonged to a different caste. He demanded that Rahul kill Puja, threatening to kill them both if he refused. Six months ago, Ishwar conspired with hired killers and agreed to pay Rs 6 lakh for the double murder, police added.

On the night of the crime, Ishwar, Bablu and four accomplices went to the couple's house. Ishwar fatally stabbed Puja with a sword while Bablu and the hired assassins attacked Rahul, who succumbed to multiple stab wounds. The killers then wrapped the bodies in large towels, loaded them into their car and transported them to the burning Parashi ghat in Ichak, where Ishwar threw them on funeral pyres, police said.

The next morning, students found the missing couple and organized protests. The local community, outraged by the crime, boycotted Ishwar and his family.

During police interrogation, Ishwar revealed that he was angry with Rahul for returning without completing his UPSC exams and for planning to marry Puja.

The police have recovered bones, steel bracelets, blood-stained towels, the murder weapons and the Bolero car used in the crime. The bones were sent for DNA testing to confirm the victims' identities.

Among those arrested, Bobby Kumar had a criminal record and Vicky Kumar was Ishwar's driver. The contract killers had received Rs 2 lakh in advance. A case was registered under relevant sections of the IPC based on a statement by Puja's father Ramsurat Yadav, police said.