TAIPEI, Taiwan — Twenty-two people were killed and 171 others injured on Sunday when one of Taiwan’s newer, faster trains derailed on a curve along a popular weekend route, officials said. The Puyuma express train was carrying more than 366 passengers from a suburb of Taipei toward Taitung, a city on Taiwan’s southeast coast, when it went off the tracks at 4:50 p.m., the Taiwan central government said in a statement. The National Fire Agency cited the Cabinet spokesman’s office as saying 22 people were killed and 171 injured. Some passengers were crushed to death, Ministry of National Defense spokesman Chen Chung-chi said.