The suspect, whose name was given as Latifah Bumaye, had accused the deceased of being a witch and causing all the woes of the town, following which she and other tortured till she died.
A statement from the Police said they got a hint that she was hiding somewhere in Kejewu Bator, a fishing community at Abrumase so a two-man team was quickly dispatched to the town and they arrested her Thursday.
The police added that she is being transferred to the Salaga Divisional Police Command for investigations.
Earlier, five suspects arrested in connection with the incident, have been formally charged with conspiracy to commit murder.
They are currently on remand in police custody after making their first appearance in court on Thursday, July 30, 2020.