A woman accused of hiring someone to kill her wealthy Canadian husband on the U.S. Caribbean island of Puerto Rico was arrested Sunday by police in Spain after being sought for five years in the alleged murder-for-hire scheme, according to the FBI. Moises Quinones, the FBI’s spokesman in Puerto Rico, said Aurea Vazquez Rijos was arrested by the Spanish police at an airport in Madrid. The Puerto Rican suspect was taken into custody as she was getting off a flight from Italy, where she has lived for years and gave birth to another man’s twins. A U.S. grand jury charged...