Never heard of this one...there’s an infamous movie in existence of another mankiller elephant that was executed by electrocution.
At Coney Island they electrocuted and elephant that killed a person. It was highly advertised at the time and was set up by Thomas Edison’s company. At the time we were at a crossroads between a national electrical grid of DC or AC. Edison wanted DC, his invention. So the whole electrocution of the elephant at Coney Island was to demonstrate the dangers of AC power.