A man has survived being pushed onto a 750-volt live track at a crowded railway station after trying to defuse a violent argument.
The 46-year-old was standing at Portsmouth and Southsea station late last night when he saw another man punched in an unprovoked attack.
He stepped in to try and calm the situation on the busy platform but was pushed onto the tracks by the attacker.
The pushed man need hospital treatment for a cut head but was otherwise unhurt.
BTP said officers were now examining CCTV footage to try and identify the attacker.