In Sweden, thousands of people gathered Sunday in Stockholm’s central square to commemorate the victims of an attack on Friday, in which four people died and 15 more were injured after a man drove into a crowd of people. The police say the suspected attacker was an Uzbek asylum seeker whose application had been rejected and who had been given four weeks to leave the country in December. Authorities say the man, who has been arrested, had shown support for extremist groups, such as ISIS.