A belt buckle shaped like a grenade caused train chaos in Barcelona and Madrid.
Security officers evacuated stations and halted services in the two cities on Wednesday after a suitcase with the grenade-like object passed through a scanner.
Authorities began searching high-speed trains and railway tracks when the alarm was raised.
The woman, who was not stopped, put her suitcase through security at Barcelona’s central Sants station.
An investigation has been launched into the incident.
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