LONDON (AP) – Thousands of people have spent London’s coldest night in months huddled in line to view the coffin of Queen Elizabeth II. Authorities warn that arriving mourners face a 16-hour wait. Honoring their patience, King Charles III and Prince William made an unannounced visit to greet the waiting crowds. William and the queen’s seven other grandchildren are due to stand vigil beside her coffin on Saturday at Parliament’s Westminster Hall. Police arrested a man on Friday night after what the force described as a “disturbance” there. Parliamentary authorities said someone tried to approach the coffin on the platform where it is lying in state.