A 6.1-magnitude earthquake shook northwestern Indonesia on Tuesday, killing 22 people, injuring more than 200 and damaging thousands of homes, authorities said. The death and destruction was concentrated in the province of Aceh on the island of Sumatra. The two hardest-hit districts were Bener Meriah and Central Aceh, where landslides cut off some major roads, the country's National Disaster Management Agency said.