Police arrested eight individuals over the attack at a nightclub in Anuradhapura on Saturday night, which saw its owner being killed and three others injured.
Around 20 masked men stormed into the club in the Kadapanaha area in Anuradhapura at about 11.45pm on Saturday night. Wasantha Soysa, a Guinness World Record holding Karate Champion, died in the attack.
Meanwhile, preliminary inquiries into the incident has revealed that the attack was a result of a personal dispute.