The body of a 30-year-old male devotee with tonsured head was found floating in the holy tank of the famous hill shrine of Lord Venkateswara near Tirupati on Sunday, police said.
The temple staff alerted police who immediately removed the body to the SVRR Government Hospital here for post-mortem, police said.
There were no external injuries on the body, police said.
The devotee might have slipped into the water accidentally or committed suicide, they said.
The incidents comes three days after the 'float festivals' in the tank concluded, they said.
Protection grill enclosures arranged in the water around the tank to facilitate a safe holy dip for the devotees, was temporarily removed for the conduct of the five-day float festivals that concluded on March 23.
It is the first such incident in the last three years, police said.
Pilgrims were not allowed to take the bath in the holy tank following the incident for about four hours, temple sources told PTI.