The Zaragoza airport in northern Spain was evacuated Wednesday morning after it received threats made in the name of the Basque separatist group ETA.
Officials say they received word that a rocket launcher had been set up to carry out an attack during a two-hour period at midday (0800 to 1000 GMT).
ETA staged a rocket attack on the Zaragoza airport back in June, but no one was hurt.
ETA has been blamed for more than 800 deaths since the 1960s when it began its armed campaign for an independent Basque state in northern Spain and southwestern France.
Some information in this story provided by AFP.