(Editor’s note: The original version of this story listed Aletaha as an MMA fighter instead of a kickboxer.)

An amateur kickboxer has died as a result of injuries sustained in a K-1 bout over the weekend.

Saeideh Aletaha, 26, died Sunday morning after collapsing in the ring following a fight at Fast and Furious Fight Series 19, which was held Saturday at Central Hall in Southampton, England.

According to the BBC, Aletaha was rushed to Southampton General Hospital after sustaining head injuries during her bout and collapsed. Hampshire Police have launched an investigation into the incident.

Aletaha’s home gym, Exile Gym in Southampton, posted on Facebook about the loss of their friend.

“Saeideh Aletaha was a lovely character with a beautiful soul. Her dedication to the sport was 110% traveling miles every day just to train. She found her place with us just a few months ago but has become apart of the family and will be sorely missed,” the post read in part.

The Fast and Furious Fight Series promotion also released a statement on Facebook.

The local newspaper, the Southern Daily Echo, obtained a statement from the Hampshire Police.

“We were called shortly before 1 a.m. on Sunday Nov. 17 by colleagues at Southampton General Hospital informing us of a woman who was being treated in hospital for a life-threatening brain injury. The woman, aged 26, died in hospital later that day. Inquiries into exactly what happened are ongoing. Next of kin have been informed.”