MEP Maria Walsh says the party has shown its true colours and that its stance is not good enough.
A Midlands MEP is strongly criticising Sinn Fein for abstaining from and voting against a resolution on Ukraine in the European Parliament.
The vote increased EU responsibility for Ukrainian security.
It also called on Russian sovereign assets to be confiscated and used for Ukraine to rebuild its defence.
Sinn Feín MEPs Lynn Boylan and Kathleen Funchion abstained from the vote while MEP Michael McNamara voted against it - the resolution passed on a majority of 442 votes.
MEP Maria Walsh says the party has shown its true colours and that its stance is not good enough:
Westmeath Man Named Supreme Milk Quality Champion
Offaly Councillor Sees "Great Potential" For Village
Legislation Providing Paid Leave For Early Pregnancy Loss To Go To Cabinet
Offaly Councillor Seeks More Roads Funding In North Of County
Revenue Seize Contraband Worth Over €153k
Plans Lodged For New 24-Hour Automated Car Wash in Laois
Westmeath School Joins Expanded Online Admissions System
Offaly Soccer Club Seeks Green Light For Major Facilities Expansion
Laois Senator Warns Midlands STEM Progress At Risk Without New Funding
Offaly ICSA Sheep Chair Hits Out At Factories Over Lamb Prices
Calls For New Affordable Housing Strategy In Offaly
"Every Parent's Worst Nightmare" - Three Westmeath People Die In Malaga Crash
Offaly Community Group Points Finger At Renewable Energy Operators Over Road Damage
Defence Forces To Carry Out Training Exercise In Offaly
Gardai Ask Public For Help In Locating Missing Laois Teenager
Midlands School Raises Over €20k To Support Education In Uganda
Hauliers Call For Incremental End To Fuel Price Supports
Two Laois Designers Selected For National Design & Craft Gallery Exhibition
Ireland Prepares For EU Presidency With Increased Security
Fatal Westmeath Helicopter Crash Caused By Failed Training Manoeuvre