Patna, Sept. 21: The two prime accused in the brutal murder of 27-year-old budding engineer Rishi Kesh Muni in small hours of Tuesday are still absconding.

The two absconders — siblings Gaurav Mishra and Saurav Mishra — were traceless 36 hours after Rishi was dragged out of his home and killed.

Police were trying to trace them till the filing of this report. Gaurav and Saurav are infamous for their violent nature.

Rishi, a student of the West Bailey Road-based RP Sharma Institute of Technology, was fast asleep in his first-floor flat in Om Sharnam Apartments in Punaichak when the assailants broke open the front door with iron rods and barged into his house around 2am. They caught hold of Rishi and started beating him up.

Rishi’s mother tried to resist but was hit hard in the back of her head by one of the assailants. She started bleeding profusely and lost consciousness.

Rishi was then dragged to the ground floor and the beating continued for at least half an hour, leaving him dead on the spot.

The police lodged a named FIR against five persons, including Saurav and Gaurav, their father Jyoti Mishra, uncle Sunil Mishra and mother Sushila Mishra. They are all residents of a second-floor flat in Om Sharam Apartments.

“We have arrested Jyoti, Sunil and a friend of theirs by the name of Prince Chakrabarty, who was a party to the crime. Prince is a student of Indian Institute of Business Management, Patna. The police are presently looking for Gaurav and Saurav,” city superintendent of police (west) Upendra Kumar Sharma told The Telegraph.

The police said the family of the victim and Mishras often quarrelled with each other. Parking was one of the major points of rift between the two families.

“There was always tension between the two families and they clashed on several occasions in the past. The quarrel between the two families started around 11.30 on Monday night. They abused and threatened each other,” the officer said.

After some time, police sources said, both the parties calmed down. But suddenly late in the night the Mishras went to Rishi’s flat with weapons and attacked him.

Sharma added: “The boy was hit hard with a cricket bat in the back of his head. A big injury mark on his head suggested so. The cuts in his body and head hint at use of sharp-edged weapons to kill him. The post-mortem report will make things clear.”

Rishi was the youngest son of his family.