Police in England have arrested a man in connection to the death of hockey player Adam Johnson.

The man in police custody was charged with suspicion of manslaughter.

Johnson, who played for the Nottingham Panthers, died after his neck was cut by the skate blade of the Sheffield Steelers’ Matt Petgrave during an on-ice collision.

It is not yet known who has been arrested.

“Our investigation launched immediately following this tragedy and we have been carrying out extensive inquiries ever since to piece together the events which led to the loss of Adam in these unprecedented circumstances,” Sheffield Detective Chief Superintendent Becs Horsfall said in a statement, according to the Independent.

“We have been speaking to highly specialized experts in their field to assist in our inquiries and continue to work closely with the health and safety department at Sheffield City Council, which is supporting our ongoing investigation.

“Adam’s death has sent shockwaves through many communities, from our local residents here in Sheffield to ice hockey fans across the world. We know these communities will expect us to handle this investigation with the same professionalism, fairness and sensitivity as any other and request that members of the public refrain from comment and speculation which could hinder this process. Our thoughts remain with all affected by this devastating incident as enquiries continue.”

Johnson, 29, was a Minnesota native who played briefly with the Penguins in the NHL.