Two teenagers have suffered serious injuries after being electrocuted.
The incident happened at about 11.45am on parkland next to Durham Road in Wednesbury – a railway line runs down the other side of the parkland.
An ambulance, a paramedic officer and the Midlands Air Ambulance from Cosford with a trauma doctor on board were sent to the scene.
A West Midlands Ambulance Service spokesman said: “On arrival, ambulance staff found two boys on the parkland who had suffered serious injuries after being electrocuted.
“Staff were told that four teenage boys had been playing next to the railway line.
“The two injured, who are believed to be 13 years old, were taken to Birmingham Children’s Hospital, one by air ambulance, the other by land ambulance using blue lights.
“The teenager airlifted was said to be in a critical condition.”