Chief Supt Michael McNulty, Dublin Metropolitan Region, agreed under oath that offering “inducements” to potential suspects in any type of criminal investigation would be improper, and in his opinion “unacceptable”.

Walter O’Sullivan denies personal motives as five face charges over alleged summons interference

The five accused, who have pleaded not guilty to a total of 39 counts, are retired superintendent Eamon O'Neill; serving Sergeants Michelle Leahy and Anne-Marie Hassett; Garda Tom McGlinchey and Garda Colm Geary, all within the Limerick and Clare garda divisions.