The deceased was identified as a 37-year-old resident of Pahamune - Kurikotuwa.
Police stated that the suspect had arrived in a car, and he had caused an accident by colliding with the motorcycle the deceased was travelling on had then assaulted him with a sharp weapon.
The suspect has since surrendered to the Narammala Police. He had told the police that the deceased had insulted him on several occasions by sending obscene photographs of his wife to his mobile phone.