The International Security Assistance Force have issued a short statement saying that they are still in the process of investigation:
ISAF is still in the process of reviewing the circumstances to determine more facts.
Our thoughts and prayers go out to the family and friends affected by this tragic event.
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New 'smart ticketing' plans will also be introduced so travellers can receive automatic compensation payments for late trains.
The 41-year-old father of six died last Thursday - a week before he and the band had been due to begin touring in North America.