Two senior members of the police team investigating the alleged Jihad Jane terror plot in the Republic have spent a week in the United States as part of their inquiries.
They travelled to the US while gathering evidence to finalise a file for the Irish Director of Public Prosecutions against a number of suspects.
The officers took a dozen statements from witnesses, whose names had surfaced during their inquiries into the suspected plot to kill controversial Swedish cartoonist, Lars Vilks, whose drawing depicting the prophet Mohammad's head on a dog's body, was published by a Swedish newspaper.
Officers will now begin putting the final touches to their file on the investigation, which began last September when Pennsylvanian divorcee, Colleen LaRose (46), who described herself in a YouTube video as Jihad Jane, arrived in Ireland.
LaRose had said in the video in June 2008 that she was desperate to “do something somehow to help the Muslim people”.
In January 2009 she made contact with jihadist sympathisers and was encouraged by one to find out where Vilks lived and to kill him.
The Garda file is expected to be sent to the DPP within weeks.