A senior lecturer at the Royal College of Surgeons has told a jury that, according to witness statements, a nurse accused of poisoning two elderly patients injected the patients in an inappropriate manner.

A nurse accused of poisoning two elderly patients told gardaí she bleeped a doctor and got permission to give one of them an intra muscular injection of a drug called Serenase.

A hospital care assistant has told a Dublin Circuit Criminal Court jury that she saw a nurse on trial for allegedly poisoning patients "quite forcefully and quite roughly" give an injection to an elderly patient.