Officers investigating the murder of Mary-Ann Leneghan, whose family is from Co Mayo, arrested a man in his 20s today, Thames Valley Police said.

A 16-year-old girl was killed and her 18-year-old friend was seriously injured after they were abducted and sexually and physically attacked by a gang of at least six men, police revealed tonight.

British detectives investigating the death of a teenage girl whose body was found in a park are looking for up to six men after revealing the victim was assaulted over several hours and may have been abducted.