Four people were killed in a stampede on Saturday, which was organised without the permission of the authorities.
Kochi City Police Commissioner A Akbar said no official requisition was received from the university for police help.
The possibility of outsiders entering the auditorium during programmes held at night cannot be ruled out.
DCP Sudarsan added that such programmes are very common on the campus and CUSAT officials have not filed any application seeking police force for the event.
The university has suspended the classes at the School of Engineering, for three days.
Four including three students died and nearly 50 were injured in the stampede during a Tech Fest at CUSAT on Saturday night.
As per the initial findings in the autopsy, the four were choked to death when the crowd pushed in, said the minister.
Police register case for unnatural death after recording statements; autopsy of deceased today.
The accident took place minutes before Nikhita's musical concert which was organised as part of the Tech Fest at the campus on Saturday night.
The incident occurred during a music concert inside a college auditorium.