NEW YORK — Joan Rivers remained in serious condition in a New York City hospital Friday, one day after going into cardiac arrest at a doctor’s office.

Melissa Rivers said in a statement her mother was “receiving the best treatment and care possible.” She also thanked Rivers’ fans and friends for their support.

“My mother would be so touched by the tributes and prayers that we have received from around the world,” Melissa Rivers said. “Her condition remains serious ... We ask that you continue to keep her in your thoughts as we pray for her recovery.”

Mount Sinai Hospital said it had no updates Friday.