Dog shock

I met a woman in Warwick Gardens today who told me that she won't let her dog off the lead there any more because a dog died recently, running through the fence  onto the train line.  

She says that the dog, apparently aged 6, chased a fox and somehow got through the fence onto the train tracks, was electrocuted and died.  She thinks there is a hole either under the fence, or in it somewhere.

Anyway.. I haven't seen a hole. And I will still be letting my dog off... but still v. sad.