A 22-year-old man was held by police for trespassing after swimming a mile through icy Atlantic water near the singer's mansion, reported Daily Mirror.
He was held and is believed to have told officers he had tried to see the 23-year-old singer earlier but was scared when he was spotted by her security team.
Swift bought the eight-bedroom Rhode Island mansion last month for around 13.8 million pounds.
It is not known if Swift was in her mansion or not.
A spokesperson for Westerly Police Department said that they met the star's security to discuss the incident and added, "There is a zero tolerance for trespassers."
In December 2012, a 24-year-old man was reportedly arrested at her Nashville home after climbing over a fence.