The SHO said Gurpreet had married a resident of Sector 44 in Chandigarh on February 14.

Guri, who is in police custody till March 12, revealed during interrogation that Gurpreet was aware of Harpreet’s murder plan, which they had discussed before executing, the SHO said.

Gurpreet, who has been arrested under Section 120-B (criminal conspiracy) of the IPC, will be put under sustained interrogation to unravel the conspiracy, the SHO added. Though the police are yet to confirm, the investigations conducted so far had raised the suspicion of “illicit relations” between the arrested cousins, said Kharar Deputy Superintendent of Police (DSP) Raj Balwinder Singh Marar.

Preliminary investigations also hinted that the arrested cousins had plans to marry after the murder to jointly “grab” the prime property worth almost Rs 25 crore owned by Harpreet’s parents.