Louth County Council has criticised what it called the "senseless destruction" of lifebuoys in Drogheda.
Four lifebuoys were destroyed in Saint Dominic's Park and Horseshoe Lane along the banks of the river Boyne.
The council said it was made aware of these incidents of vandalism and criminal damage overnight.
This follows the destruction of three other lifebuoys in Saint Dominic's Park last week.
Louth County Council Water Safety Officer Mark Kimmins said this is taken very seriously and that they are engaging with gardaí.
"Lifebuoys are installed in areas where there is a history of tragedy or a risk to life. Destruction of these items could result in tragic consequences for a family. I simply cannot understand why you would want to put someone's life at risk," he said.
Anyone who witnesses the tampering or damaging of life saving equipment is asked to contact gardaí.
Mr Kimmins said that an average of 110 drownings occur in Ireland every year.
The majority of these happen at inland water sites, "such as those targeted by whoever is carrying out this senseless destruction", he added.
Anyone who witnesses the tampering or damaging of life saving equipment is asked to contact gardaí.
Mr Kimmins said that an average of 110 drownings occur in Ireland every year.
The majority of these happen at inland water sites, "such as those targeted by whoever is carrying out this senseless destruction", he added.
