Two adults and two children were killed in a light aircraft crash in Toledo Province in central Spain, reports said on Monday.The aircraft had taken off from the Cuatro Vientos Airport in Madrid at around 4 p.m. local on Sunday en-route to Cascais in Portugal, but came down within 20 minutes in Canada Real Leonesa in Spain.The crash was witnessed by a shepherd, who alerted rescue services, Xinhua news quoted local emergency services. However, when the rescuers rushed to the site they were unable to do anything and the flames were not extinguished until two hours after the accident.The victims were yet to be identified and the experts were investigating the cause of the crash, which happened under poor weather conditions with low clouds and rain.