A 51-year-old woman who went to Los Iros beach with her husband on Christmas Eve was found dead in the water.
Police are awaiting an autopsy to determine exactly how Melissa Saroop died.
According to a police report, around 9.30 am Saroop and her husband were at the beach located just off Palo Seco.
She was in waist-high water while her husband was sitting on a rock.
Police were told that she walked out to the shallow with the water reaching her ankle and then laid down in the water.
Police said Saroop was subsequently seen lying face down.
Other bathers told the police that Saroop never called out for help or appeared to be in difficulty.
They only realised something was wrong when she did not move from that position.
Police said she was already dead when she was pulled out of the water.
Investigations are continuing.