She reportedly told officers that she had come to attend Bieber’s birthday party – which was held earlier in the week at another location – and entered the unoccupied home through an unlocked door.
Ms Zhao, who faces a charge of criminal trespass, said she was Bieber’s friend, but investigators believe she is just one of millions of fans who follow the pop superstar on Twitter.
Earlier, US police controversially released a video of Bieber providing a urine sample following his arrest for driving under the influence in January.
