A boy who died at an indoor ski slope during an evening out with friends was killed when his toboggan crashed into a member of staff.
Louis Watkiss, 12, suffered fatal injuries in the incident at the SnowDome in Tamworth, Staffordshire, on 24 September last year.
Emergency crews rushed to the scene but Louis, of Sutton Coldfield, West Midlands, was pronounced dead at the scene.
The Health and Safety Executive (HSE) has now confirmed it is leading a “criminal investigation” into the schoolboy's death.
The HSE said Louis had collided with one of the snow centre’s employees while on the ski slopes at the popular attraction.
A spokesperson said: "Twelve-year-old Louis Watkiss was in a toboggan when it collided with one of the snow centre’s employees on Friday, 24 September, 2021.
"Louis suffered fatal injuries in the collision."
Andrew Johnson, principal inspector at HSE, added: “We continue to prioritise and thoroughly investigate the death of Louis, to establish any breaches of health and safety law.
“We are in regular contact with Louis’ family.”
Following his death, Louis’ family paid tribute to him, saying he was their “love, pride and joy”, and a very talented musician who was sports mad.
In a statement released via Staffordshire Police at the time, they said: “Louis was a son, a brother, a grandson, a cousin and a friend.
"Louis was a studious pupil who enjoyed learning, showing immense curiosity about the world around him.
“We are so thankful George had five happy years with his brother, and he will hold dear the memory of Louis' stoic personality.
"We are eternally grateful for the honour of knowing Louis and the pleasure of raising him…
“We love Louis very much. Our pride. Our joy. Our love. We miss him so much it hurts.”
Following the incident, the SnowDome said in a statement: "Directors and staff are deeply shocked by what happened, and our thoughts and prayers are with his family at this terrible time.
"An investigation is currently being carried out by the authorities, and we are giving it our full co-operation."