Gardai are probing a sinister incident in which three patrol vehicles and eight private cars belonging to members were targeted outside a station in the northeast.
The vehicles were all keyed while parked outside Dundalk Garda Station in Co Louth.
The motive behind the incident is still unknown and no arrests have yet been made.
Read More: Brother of Galway pier tragedy victim pays emotional funeral tribute
Derek O'Donoghue, the Garda Representative Association's rep for Co Louth, branded the incident as "disgraceful."
He told the Irish Mirror: "It's shocking that this has happened to gardai's personal property and they also targeted patrol vehicles.
"An investigation is underway but it's still quite fresh.
"But while we are struggling to recruit more gardai, these incidents have a real negative impact. And morale at the moment in the force is at an all time low."
Garda vehicles have been targeted in Dundalk repeatedly since 2019.
Although it is not thought that this incident is connected to any previous, Donoghue added: "You also have to take into account that this is not the first incident in Dundalk.
"It is a recurring theme which is very concerning for all based there."
A garda spokesman confirmed a probe is underway.
A spokesman said: "Gardai are investigating a number of incidents of criminal damage which occurred outside Dundalk Garda Station in the early hours of this morning.
"There have been no arrests. Investigations are ongoing."
READ NEXT :
Near miss as Dart driver passed through two red light signals during Storm Barra
The two Irish hotels awarded five stars by Forbes and what they cost per night
Pools of blood outside building as man hospitalised in Dublin incident
Everything you need to know about the Late Late Show line-up this Friday
Jack Keating set for career change as Boyzone star's son lands exciting new gig
Get breaking news to your inbox by signing up to our newsletter