A 15-year-old German girl who wandered away from her parents during an outing in Dilesi, north of Athens, on Sunday was found in Evia late on Monday after authorities activated a new alert system for missing children.

Sandra Himmel, who ran off from her parents following an argument, was found in a supermarket parking lot after walking several kilometers from Dilesi, via Avlida, to Nea Lampsako in Evia, police said.

Officers launched a search after Sandra’s parents reported her missing. After failing to find any leads, they activated the Amber Alert system, launched in May by police and child protection groups.

Foot patrols, with sniffer dogs, scoured the area. Television channels broadcast the girl’s photo. Informative videos were aired on screens in metro stations and messages flashed up on electronic signposts across the national road network. Even Athens International Airport was informed.

By Monday afternoon, authorities received three telephone calls from citizens claiming to have spotted Sandra and within a few hours she was tracked down.