Dasuki arreeted Buhari on sallah eve 1985

You still haven't answer my own question, i read well the post and that is the reason for my question, i repeat , Is this just a coincident that  Dasuki arreeted Buhari on sallah eve 1985 and 30 years later President Buhari Arrested Dasuki on Sallah eve 2015 ? Why not invite him to the office as they did to Gordon Obuah, the former Chief Security Officer (CSO) ? I don't think one need to be rocket scientist to understand the motive behind the arrest. Otherwise