"The whole mock drill was a sham. They did not even have basic rescue equipment," a local, who claims to have been on the spot during the accident, told Manorama News.
Locals have alleged lack of preparedness on the part of the organisers.
The police will soon file a charge-sheet over his death and also book the relatives of his lover on charges regarding abetment of suicide.
A rough sea alert is issued on Kerala coasts and tourists are advised not to venture into sea till 11.30 pm on Monday.
Shehan was a first-year student of the university's integrated PG course in Development Studies.
The deceased was Ashokan and the accident took place in the Muvattupuzha River at Chakkala, Vadayar in Vaikom, in Kottayam district around 9 pm on Sunday.
The accident happened around 12km away from Chennur at Adilabad in Telangana.
The deceased has been identified as Jibith, son of Jayaraj and Manju of Pappad. He was a class 9 student.
The deceased were identified as Laiju and his 6-year-old daughter Arya Nanda.
Caught in strong currents, the palliyodam capsized during the ceremony before leaving for Aranmula.