Police open investigation into Adam Johnson incident.

Police are now officially looking into the incident that claimed the life of former Pittsburgh Penguins forward Adam Johnson.

The South Yorkshire police have now officially confirmed that an investigation is underway in a statement released on their website Monday.

"We were called at 8.25pm on Saturday 28 October to reports that a player had been seriously injured during a Sheffield Steelers versus Nottingham Panthers game at the Utilita Arena in Sheffield," said a police spokesperson.

"Officers attended the scene alongside other emergency services and one man, aged in his 20s, was taken to hospital with serious injuries. Sadly, he was later pronounced deceased at hospital.

"Our officers remain at the scene carrying out enquiries and our investigation into the circumstances surrounding the incident remain ongoing."

Johnson was killed when he was struck in the throat by the skate of Sheffield Steelers defenseman Matt Petgrave, leading to an injury that would sadly prove to be fatal.

Since that time there has been a heated debate on social media regarding whether or not the incident was an accident, with at least 3 former NHL players expressing their belief that this was not a "freak accident" as some have tried to paint it.

Stay tuned for more on this developing story.