Trial hears evidence on telephone traffic
THE trial of Graham Dwyer has begun hearing evidence in relation to telephone traffic.
Trial Judge Mr Justice Tony Hunt said credit "must go to the accused" for giving his consent to an approach that would not oblige the prosecution to prove everything in minute details that would leave the jury with a "blizzard of irrelevant detail".
Chief Superintendent Peter Kirwan, from the Crime and Security Section at Garda Headquarters, testified that he had dealings with telecom service providers. He agreed with prosecutor Sean Guerin SC that legislation requires providers to retain records for phones.
Chief Superintendent John Gilligan said he also carried out this task in the Crime and Security Section and was responsible for requests coming in for three numbers in late August 2012.
Conor O'Callaghan, a telecoms engineer with Vilicom Engineering Ltd, said the firm worked with telecom operators with respect to the data they collected. Mr O'Callaghan also gave evidence about mobile phone masts and the cells through which calls are routed.
The trial continues.