PUNE, Sept. 6 -- Pune rural police have arrested a third accused in the murder of real estate businessman Ketan Agarwal, 26, alleging that he was involved in planning the crime and aware of an earlier bid to assault and subsequently kill the victim. The accused, identified as Ritesh Hange, 22, a native of Beed, is one of the prime accused Chetan Chaudhary's friend, and works in a private company in Pune. He was arrested on Friday and produced before the Vadgaon Maval court, which remanded him in police custody till September 12. Sandip Singh Gill, Pune rural superintendent of police, said, "That Ritesh was involved in planning Ketan's murder emerged in the course of our investigation." Police caught on to this while examining a mobile phone seized during the probe, in which chats and messages pointed to discussions about planning the crime and subsequent attempts to remove or destroy evidence that could link the accused to the murder. Gajanan Tonpe, deputy superintendent of police, Lonavala division, corroborated this, also alleging that the accused was involved in planning the murder with both Chetan and Ketan's fiancee Siya Goyal, 22. Siya and Chetan allegedly pushed Ketan off a cliff at Lohagad Fort, in Pune district, on June 18, resulting in his death. Tonpe said Chetan allegedly contacted Ritesh after the incident and informed him about the murder. Ketan's death was initially treated as accidental after he fell into a gorge at the fort while trekking with Siya. However, his father and sister raised doubts over the circumstances, following which police registered a murder case. During the probe, investigators examined CCTV footage, technical evidence and information gathered while questioning people connected with the case. Police said CCTV footage showed a man wearing a hoodie despite the hot weather who was allegedly following Ketan and Siya. His suspicious movements prompted investigators to identify him and examine his connection with the case. The probe led police to Chetan, who investigators allege was in a relationship with Siya. Police suspect that Ketan had become an obstacle in their relationship and that Siya and Chetan allegedly conspired to eliminate him....