Thousands of Thai mourners are lining the streets of Bangkok, hoping to see the body of King Bhumibol Adulyadej as it it moved from a hospital to a temple in the Grand Palace.
The world's longest-reigning monarch died on Thursday aged 88, sparking a national outpouring of grief.
The government has declared a year-long official mourning period.
Crown Prince Maha Vajiralongkorn has been named as successor, but has asked for a delay in the process.
The cabinet has declared Friday a government holiday, and flags are to fly at half-mast for the next 30 days.
People have been asked to wear black, and avoid "joyful events" during this period. Cinema screenings, concerts and sports events have been cancelled or postponed.