A former MLA and 11 other people were booked by the Haryana police in connection with the killing of the Indian National Lok Dal's state unit president Nafe Singh Rathee and a party worker in Bahadurgarh near Delhi.
Three unidentified gunmen travelling in an i10 car ambushed Rathee's SUV car and sprayed bullets on them, leaving two dead, and two others seriously injured on Sunday.
The FIR registered by the police on Monday named former MLA Naresh Kaushik, Karambir Rathee, Ramesh Rathee, Satish Rathee, Gaurav Rathee, Rahul and Kamal. The FIR also mentions five unnamed people.
The case has been registered under various IPC sections, including that of murder.
There have also been reports of gangster Lawrence Bishnoi's henchmen being linked to the murder of Rathee.
Meanwhile, Nafe Singh Rathee's family has refused to cremate his body until those behind the murder were arrested.
The attack on the INLD Haryana unit chief came weeks before the Lok Sabha elections, drawing sharp reactions from opposition parties who alleged a breakdown in law and order in the BJP-ruled state.
Haryana Chief Minister Manohar Lal Khattar Sunday said that not a single culprit involved in this case will be spared. Police have been instructed to arrest the accused as soon as possible and take strictest action, he said.
INLD senior leader Abhay Singh Chautala accused the government of failing to provide Nafe Singh Rathee with security despite a threat to his life. He also demanded a CBI probe into the incident.
The opposition Congress and Aam Aadmi Party also hit out at the Manohar Lal Khattar government over the incident.
(With PTI inputs)
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