This came from skateboarding.com:
Skateboarding suffered a tragic loss today: Shane Cross has passed away.
The 20-year-old was fatally injured while riding on the back of Ali Boulala's motorcycle in Australia. Ali survived the accident but is currently in critical condition.
More details to follow.
Our thoughts and condolences go out to everyone involved and everyone's friends and families, this is a terrible loss and a tragedy.