According to the FIR, Ahsan of Chak Subhan Shah, Okara, some 130 kilometres from Lahore, was playing near the track yesterday when he threw a stone at Pakpattan-bound Farid Express injuring railway ticket collector Yasin Gulzar.
A railway police team raided the boy's house and arrested him under sections 127 and 130 of Pakistan Railway Act.
The minor was presented before a magistrate who granted him bail on personal surety of his father.
The ticket collector who registered a case against the boy said, he was present in a bogie when a stone hit him which came outside of the window.