The boy was referred to Wah Cantonment Hospital as no Haripur hospital has a burn centre.
Family sources said Rehan, 13, a resident of Afghan Camp No 16, was playing with an iron rod at the roof of his home when it accidentally touched the high tension electricity line.
A rescue team shifted the boy to Haripur Trauma Centre, where doctors said 50 per cent of the boy’s body was burnt.
The doctors later referred him to Wah hospital after preliminary treatment.
Separately, unknown attackers shot dead a man near Sera-i-Gadai village on Saturday.
The motive behind the murder was not immediately known, police said.