Update: Connolly Station has been reopened after a suspect item found there earlier today was deemed to be "historic in nature".
Irish Rail announced that the army had attended the station but have recently departed, and that services are resuming, but with delays.
The station had been closed for approximately two hours today.
Security alert lifted, Connolly Station reopening after Army attended to suspect item, historic in nature. Full services resuming, delays remaining but will ease pic.twitter.com/Ht8dzVagpM— Iarnród Éireann (@IrishRail) April 30, 2018
A Garda statement said: "Workmen in the area near Connolly Station car park discovered what's believed to be an explosive substance at approximately 11.30am.
"The neighbouring houses and offices in the area have been evacuated and the area in question is cordoned off."
PA & Digital Desk
Earlier: Dublin's Connolly Station is closed due to what Iarnród Éireann has said is a security alert.
The station has been evacuated and closed on the advice of Gardaí.
Irish Rail have said the station is expected to remain closed for at least two hours pending the arrival of the army to investigate a suspect item in station area.
Station expected to remain closed for at least two hours and possibly longer pending army attending suspect item in station area— Iarnród Éireann (@IrishRail) April 30, 2018
The alarm was raised when a suspicious item was found near platforms one and two shortly after 12 noon.
DART, Northern Commuter and Maynooth Commuter are operating as normal but are not stopping at Connolly.
Other trains will terminate at nearest possible stations with road transfers.
Update: security alert at Connolly Station, station evacuated & closed on Garda advice.
DART and Commuter which operate through Connolly to other stations are running but will not stop at Connolly.
Other trains will terminate at nearest possible stations with road transfers.— Iarnród Éireann (@IrishRail) April 30, 2018