Mr Byrne is charged with IRA membership on June 5, 2014. He is also charged with possession of a pistol and 10 rounds of ammunition.
He was granted bail on his own bond of €1,000, an independent surety of €20,000 and was ordered to sign on daily at Tallaght Garda Station. He was remanded to appear again on July 29.
Gunmen kill 18 in village raid
At least 18 people werekilled when gunmen raided a village in the northern Nigerian state of Kaduna, a police spokesman said, the latest in a string of attacks that have racked Africa's most populous country.
The gunmen stormed the village in the Sanga local government area in the southern part of the state on Monday night.
Pilots die after jet fighter crash
Two civilian pilots whose plane crashed after colliding with a German fighter jet during a military maneuver are presumed dead.
Human remains found near the site of Monday's crash likely belonged to the pilots, police said.
Prosecutors have begun an investigation into possible negligent homicide on the part of the fighter pilot, who was able to land his plane at a nearby military airfield.
She thinks it's all over... it is now
Helena Costa was supposed to blaze a new trail for women in French soccer. She backed away yesterday under a barrage of misogynist gibes, including several by the French football club chairman who had hired her.
Ms Costa (37) last month became the manager of Clermont Foot 63 in the French second division - the first woman ever appointed to manage a men's team at such a high level. But the Portuguese coach confirmed yesterday that she was resigning her post without ever meeting her players. Ms Costa said she was leaving for "purely personal" reasons.