Gardaí are searching for four people who they believe were in a car that knocked down and killed a cyclist in Dublin on Monday night.
Thiago Cortes, 28, was hospitalised following the incident, which happened at around 10.30pm on Monday.
He died of his injuries in the Mater Hospital this morning.
Mr Cortes, who was originally from Brazil, had just delivered food in Dublin's north inner city and cycled out on to the north Liffey quays.
A car with no tax, insurance or NCT came along at speed and knocked him down.
The driver of the car did not remain at the scene.
A 2005-registered Ford Focus was found abandoned at the nearby Castleforbes Square apartments.
Gardaí said they were making good progress in the investigation as they seek to identify those involved.
They are examining CCTV footage and have today appealed for witnesses or anyone with information to contact them at Store Street Garda Station.
They are particularly interested in speaking to people who has dashcam or mobile phone footage and were in the area of the North Wall Quay, North Wall Avenue, East Wall Road, Sheriff Street Upper, Castleforbes Road or Castleforbes Square between 10.15pm and 10.30pm last Monday night.
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A vigil was held for Mr Cortes on O'Connell Street in Dublin this evening, with friends, fellow Deliveroo riders and cyclists paying tribute to the 28-year-old.
His fiancee Teresa Dantas joined the joined hundreds of friends from Ireland and Brazil to remember him.
The crowd marched from O' Connell street down to the North Wall Quays and left flowers and candles at the hit and run location.
Fiachra Ó Luain from the English Language Students Union of Ireland said the death of Mr Cortes was "extremely devastating for the entire community, Brazilian community, the student community in general and for all of us who respect all the work that has been done by students and people like Thiago over the lockdown".
Speaking on RTÉ's Drivetime, he said they have done "a disproportionate amount of the frontline work like deliveries and cleaning".
Mr. Ó'Luain said the 28-year-old had only become a Deliveroo driver a month ago.
He said that Thiago arrived in Ireland with his girlfriend two years ago and they became engaged in the past few months.
The couple had been together for over six years and were planning to marry in Brazil next year.
Mr Ó Luain said Mr Cortes had just finished two years of study at Erin School of English and was in the process of finishing his application and pay for a masters degree in business.
