A fourth man has been charged with the murder of 16-year-old Mary-Ann Leneghan.
Two men were earlier remanded in custody in England charged with the murder of Ms Leneghan in Reading.
The men, aged 18 and 19, will appear before a court in Reading on Thursday. The two are also accused of the kidnap and attempted murder of Mary-Ann's friend.
Mary-Ann Leneghan, whose father is from Co Mayo, and her 18- year-old friend were allegedly abducted by a gang of men on 6 May in Reading, Berkshire.
A third man, aged 21 and from London, has also been charged. Police are questioning two other people.
