Private Seán Rooney, who was killed in an ambush in Lebanon on December 14, 2022, was remembered by his fellow peacekeepers as well as in Ireland on the first anniversary of his death.

Óglaigh na hÉireann, Ireland’s Defence Forces, chronicled the commemorations for Rooney in Lebanon on Thursday, which began with a silent parade at dawn from the troops of the 123rd Infantry Battalion UNIFIL (United Nations Interim Force In Lebanon).

This morning, troops of the 123rd Infantry Battalion UNIFIL began their commemorations of our fallen comrade Pte Seán Rooney with a silent dawn parade. If the security situation allows, the troops will travel for a ceremony at the Tibnine memorial.

RIP Seán. Ar dheis Dé go… https://t.co/C56CkqBbNO

— Óglaigh na hÉireann (@defenceforces) December 14, 2023

Later on Thursday, the Force Commander, the Mayor of Tibnine, and the Senior Irish Officer Col Tom McGrath laid wreaths to honor 48 fallen soldiers at the Defence Forces UNIFIL Memorial in Tibnine.

Afterward, Mass was celebrated at St. George's Church in memory of Rooney.

Today at the Defence Forces UNIFIL Memorial in Tibnine, the Force Commander, the Mayor of Tibnine and the Senior Irish Officer Col Tom McGrath laid wreaths to honour our 48 fallen soldiers. Afterwards Mass was celebrated at St. George's Church in memory of Pte Seán Rooney. pic.twitter.com/kPuVksdYDW

— 123 Infantry Battalion UNIFIL (@irishpolbatt) December 14, 2023

The 123rd Battalion UNIFIL shared photos of the honor guard at Peacekeepers' Square in Camp Shamrock, as well as a mural of Rooney.

As the day drew to a close here in south Lebanon, so too did our dawn to dusk honour guard at Peacekeepers' Square in Camp Shamrock, involving men and women from across the Battalion. T-wall mural painted by Pte Jackson, 2 Cav, our predecessor in 122 Inf Bn. Never forgotten. pic.twitter.com/7v8t4xnE5J

— 123 Infantry Battalion UNIFIL (@irishpolbatt) December 14, 2023

Meanwhile, Tánaiste Micheál Martin said in the Dáil on Thursday: “One year ago today, Seán was killed in the service of peace in southern Lebanon. 

“His life was one full of courage. It was cut short in the noble pursuit of peace. There is no more noble work than that of the peacekeeper. 

“Everyone in the House will join in expressing solidarity with and sympathy to Seán's mother Natasha, his fiancée Holly, the Rooney and McCloskey families, and his colleagues and friends in the Defence Forces who mourn his loss every day.”

Today marks one year since the death of Pte Sean Rooney while on deployment in Lebanon.

His was a life of courage, cut short in the noble pursuit of peace.

My thoughts are with his family, loved ones and @defenceforces comrades, who deeply feel this devastating loss everyday. pic.twitter.com/T2mDSHnGOP

— Micheál Martin (@MichealMartinTD) December 14, 2023

Earlier, on Tuesday, Archbishop Eamon Martin was the Chief Celebrant at the first anniversary Mass of Rooney at the Church of the Holy Family in Dundalk, Co Louth.

At the 1st anniversary Mass for Private Sean Rooney I blessed, at his grandad’s request, an image of #OurLadyOfGuadalupe

My Homily below homily explains why….RIP⬇️https://t.co/Pg33C1Yw2Upic.twitter.com/bbeWPp6uk7

— Eamon Martin (@ArchbishopEamon) December 12, 2023

Rooney, a native of Newtowncunningham, Co Donegal, joined Ireland's Defence Forces in March 2019 and his home unit was the 27 Infantry Battalion in Dundalk. He previously served overseas with the 119 Infantry Battalion UNIFIL.

Óglaigh na hÉireann said that on December 14, 2022, at approximately 11:15 pm Irish time, a serious incident took place in Lebanon involving members of the 121st Infantry Battalion, UNIFIL.

A convoy of two Armoured Utility Vehicles carrying eight personnel traveling to Beirut came under small arms fire. Four personnel were taken to Raee Hospital, near Sidon, as a result of the incident.

24-year-old Rooney was pronounced dead on arrival at the hospital while Trooper Shane Kearney, from Co Cork, underwent surgery. The two other soldiers were treated for minor injuries.

Then-Minister for Foreign Affairs Simon Coveney said Rooney was killed during a "standard administrative run" from UNIFIL's main camp in southern Lebanon to Beirut. 

Before being repatriated to Ireland in December, Rooney was awarded the United Nations UNIFIL Peacekeeping Medal, the War Medal, the Wounded Medal, and the Appreciation Medal Bronze Degree from the Lebanese Armed Forces.

In May, Rooney was posthumously awarded the Dag Hammarskjöld Medal at the United Nations.

RTÉ News reported on Thursday that while the Irish government announced that three parallel investigations would take place – one by the Irish authorities, another by the United Nations, and a third by the Lebanese authorities - no findings from any of the investigations have been released.

Judicial proceedings in Lebanon are ongoing, RTÉ News said on Thursday, adding that Lebanese authorities indicted seven men in criminal proceedings in connection with the case.

So far only one man has appeared in court, but he was released on bail, reportedly on health grounds, last month.

Another hearing is due to take place on Friday.