Police were called to the incident at Radlett Station on Tuesday. (Image: Google Maps)
A moving train had a window smashed by someone using a slingshot as it travelled through Radlett.
British Transport Police was called shortly before 5.30pm on Tuesday (April 16) after reports stones were being fired towards trains near Radlett Station.
After the damage was inspected at Luton, the train was allowed to continue at reduced speed to Bedford where a temporary repair took place.
Officers searched the area for those responsible, but BTP confirmed that "there was no trace of the individuals".
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