Karonga Police Station Publicist Sub Inspector Enock Livasoni has confirmed the sad development in an interview with Zodiak online Wednesday.
According to Livason all the seven suspects are said to be the sons of the deceased and killed him for allegedly contributing to misfortunes in their family.
Some of those who have been nabbed are Penjani Siliwonde, Silver Siliwonde, Julius Siliwonde, Amon Siliwonde, and Steven Siliwonde.
The deceased Wickson Siliwonde hailed from Phaniso village in the area of Traditional Authority Kilipula in Karonga.