It's true, was at the park today and caught up in the lockdown. The incident took place on the bridge.
Staff handled the situation as well as they could and coasters stayed open. We were allowed out from around 630 and had to leave on the right side of bridge on the raised bit with the rest of the bridge taped off and many police stood adjacent to the tape. Blood marks could be seen on the floor.
Thorpe have since issued a statement on socials.