Taoiseach Micheál Martin has visited the 9/11 memorial in New York on his trip to the US.
Mr Martin walked around the north and south pools of the site, where each of the nearly 3,000 victims' names are inscribed.
He stopped to read the names of Irish people who lost their lives in the 11 September terrorist attacks, including Cork native Ruth Clifford McCourt.
Ms Clifford McCourt, a Boston-based business-owner, and her four-year-old daughter, Juliana, were among the passengers aboard United Flight 175.
The hijacked plane crashed into the South Tower of the World Trade Center.
The Taoiseach laid a white rose at each of the names of the six Irish-born victims.
He also paused at the 'Survivor Tree', a pear tree that was discovered in the ruins of the attack, nursed back to health and placed at the memorial in 2010.
Mr Martin is in New York for a five-day visit. On Thursday, he will chair of a meeting of the UN Security Council.
The following day, he is due to deliver an address to the United Nations General Assembly.