Middleweight boxer Sherif Lawal died after collapsing in the ring Sunday.

The British Boxing Board of Control issued a statement Monday, saying "the thoughts of all those involved in Boxing in Great Britain are with" Lawal's family:

BBBofC @BBBofCuk

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Lawal was making his professional debut against Malam Varela. According to the Associated Press, Varela landed a blow in the fourth round that sent Lawal to the canvas. The referee called for the bell and paramedics began treating the 29-year-old at the scene.

Lawal was pronounced dead after being transported to a local hospital.

Promoters for the card on which he and Varela were competing canceled the remainder of the event.