Adrienne McGlinchey has resumed giving her evidence at the Morris Tribunal.
Ms McGlinchey is a key witness in the tribunal, which was established following the findings of the internal Carthy inquiry.
She told the tribunal today how Detective Noel McMahon, one of the gardai at the centre of the corruption allegations, asked her to pick up three packages from a man in Carndonagh.
She said she opened one package and found that it contained thousands of Irish punts.
She said McMahon told her the money was related to amusement arcades in Buncrana.