British Transport Police [BTP] said it is not treating the boy's death as suspicious. Emergency services attended the railway station at 3.38pm on that day.
A BTP spokesman said on Monday that officers were working to inform the boy's next of kin.
West Midlands Ambulance Service sent two ambulances, HART paramedics and two paramedic officers to the scene.
If you have been affected by this article contact Samaritans on 116 123 or at samaritans.org