Police sources said the murder, initially suspected to be linked to gang rivalry, has now been traced to an alleged conspiracy arising out of a disputed land transaction. The Chandigarh Police has uncovered what it believes is the use of encrypted messaging application Zangi to facilitate communication between the accused in the murder of property dealer Chamanpreet Singh alias Chinni Kubaheri, as investigators widened their probe into what is now being treated as an alleged contract killing linked to a property dispute. On Tuesday, police secured one-day remand of property dealer Harshpreet Singh to confront him with co-accused Amreen Kaur Rai, a resident of Sector 35, who was arrested following what investigators described as a major breakthrough during the interrogation of Harshpreet and the alleged shooter, Rajan alias Piyush. Police sources said the murder, initially suspected to be linked to gang rivalry, has now been traced to an alleged conspiracy arising out of a disputed land transaction.…