Definitions by UltraDan
SIO
senior investigating officer
a british police rank rank held by a police officer (DCI at minimum), who leads a major investigation (e.g.:murder)
a british police rank rank held by a police officer (DCI at minimum), who leads a major investigation (e.g.:murder)
Who is the SIO of this murder taskforce? It's DCI Peter Banks.
Who's in charge of this murder investigation? DCI Harold Crowly is the SIO. Talk to him.
Who's in charge of this murder investigation? DCI Harold Crowly is the SIO. Talk to him.