At least two arrests have been made following a surprise visit from former US President Joe Biden to Trinity College in Dublin on Tuesday.
Biden was accompanied by former first lady Jill Biden as they attended a ceremony where their son Hunter was awarded the Gold Medal for Outstanding Contribution for Public Discourse.
During the trio's visit to the College Historical Society groups of pro-Palestinian protesters gathered, some of whom were detained by gardaí (Irish police).
As Biden and his family left the venue, some of the people moved forward and objects were thrown, Irish broadcaster RTÉ has reported.