new delhi, Jan. 9 -- Delhi Police have recovered a diary containing detailed daily entries on the family's activities, meals and finances from the Laxmi Nagar house where a 25-year-old man allegedly killed his mother, sister and younger brother earlier this week. Police said it is not yet clear who maintained the diary, and it has been sent to the Forensic Science Laboratory (FSL) for examination. Investigators said on Thursday that they have found a diary with daily logs of the family's activities, their meals and their finances. The officer added "We don't know who wrote it. We have sent it for FSL examination." The triple murder came to light on Monday when Yashveer Singh walked into the police station and surrendered. He confessed to ki...