Sydney (Australia) - Australian authorities have raided at least five locations across Sydney Monday after police foiled an attempted attack on a passenger jet, arresting four people suspected of planning to carry out a complex terror plot involving homemade devices. Officers in protective gear were seen rummaging through bags of garbage and bringing items out of at least one location, CNN reports. According to Australia's ABC News, police found objects and materials that could be used to make a bomb during a house raid in the suburb of Surry Hills.