A jury at the trial of seven Dubliners charged with murdering 20-year-old Dale Creighton were warned not to search for information on the internet or discuss the case with anyone.
Ms Justice Deirdre Murphy told the six women and six men at the Central Criminal Court that they are to make their decisions in relation to each of the accused based only on the evidence heard during the trial.
She said they are the judges in a murder trial, which is the "most serious offence in the criminal calendar" and that they have a great responsibility.
Dale Creighton died on January 2, 2014, about two days after an incident at the footbridge over the Tallaght bypass between Saint Dominic’s Road and Greenhills Road.
Charged with his murder at the footbridge are 23-year-old Aisling Burke and 28-year-old David Burke, both with a current address at Beechpark, Collinstown, Co Westmeath.
Also charged with Mr Creighton’s murder are Graham Palmer (aged 26) with a current address at Park Avenue, Portarlington, Co Laois; Ross Callery (aged 23) with an address at Brittas, Co Dublin; James Reid (aged 26) currently of Glen Aoibhinn, Gorey, Co Wexford; Jason Beresford (aged 23) with an address at Coill Diarmuida, Ard a’ Laoi, Castledermot, Co Kildare; and Gerard Stevens (aged 27) currently of Grosvner Square, Rathmines in Dublin.
They have all pleaded not guilty.
Each accused also pleaded not guilty to violent disorder at the footbridge that New Year’s Day.
The trial of the six men and one woman will continue tomorrow morning.