<p>Passengers on a Saudi Airlines flight from Spain to Riyadh were evacuated from their plane today following an unspecified threat that put Madrid airport on high alert, airport authorities said.<br /><br /></p>.<p>"Security forces and rescue services are mobilised. The plane was isolated and passengers evacuated," a spokeswoman for AENA, the group that manages airports in Spain, told AFP.</p>
<p>Passengers on a Saudi Airlines flight from Spain to Riyadh were evacuated from their plane today following an unspecified threat that put Madrid airport on high alert, airport authorities said.<br /><br /></p>.<p>"Security forces and rescue services are mobilised. The plane was isolated and passengers evacuated," a spokeswoman for AENA, the group that manages airports in Spain, told AFP.</p>