Celebre D’Allen, a horse competing in the Grand National, has died. The 13-year-old horse died on Monday, April 7 after collapsing in the Grand National two days prior.

One of the biggest events on Britain’s sporting calendar takes place Saturday when the Grand National horse race is run at Aintree in northwest England. The pre-race favorite for the grueling steeplechase over 30 fences is set to be I Am Maximus,

Celebre D’Allen, who had led the field, had needed lengthy veterinary treatment after collapsing after being pulled up in the big race at Aintree on Saturday