Chief of Royal Thai Police Priewpan Damapong instructed the Transportation Ministry to place the country's six international airports on high alert. The directive was said to follow reports provided by Israeli intelligence that further attacks on Thai soil were possible. Thai police carried out building-to-building searches around a Jewish synagogue on Sukhumvit Road. The synagogue was already under 24-hour police protection following the arrest in January of a Swedish-Lebanese alleged Hezbollah agent. The Counter-Terrorism Bureau of the Israeli National Security Council issued a worldwide travel warning, based on information that Iran and Hezbollah were planning additional attacks against Israelis and Jews.