Buenos Aires, Muharram 08, 1437, October 21, 2015, SPA -- A mayoral candidate in the town of Puerto Iguazu in north-eastern Argentina died Tuesday during a debate ahead of Sunday's elections, dpa reported. Manuel Alvarez, 57, suffered an apparent heart attack during the debate, which was held at a school. Alvarez, who was the candidate for the conservative PRO party, fell unconscious while debating his opponent and died shortly after being transported to hospital, according to DyN news agency. --SPA 01:02 LOCAL TIME 22:02 GMT www.spa.gov.sa/w