Noida, April 11 -- Days after a 23-year-old college student drowned in a water-filled vacant plot belonging to the Noida Authority in Sector 94, police on Friday registered a murder case against three of his friends at the Sector 126 police station, based on a complaint by the deceased man's family.

Senior police officers said the family has also demanded a "fair investigation" into the incident that took place on Wednesday.

Harshit Bhatt drowned in the water-filled vacant plot in Sector 94 on Wednesday after he and his three college friends went there to celebrate the culmination of their exams. According to police, one of his friends tried to save him, but Bhatt sank in the deep water.

Sector 126 station house officer Sumnesh Kumar s...