He described the Clondalkin case - in which a 43-year-old woman was set on fire at her home - as “an absolutely horrendous attack”, now upgraded to attempted murder.
Garda Commissioner Justin Kelly has said the violent attack on a woman in Clondalkin is not linked to the separate Leixlip incident 28 hours earlier.
"Attacks like this are rare in Ireland, and obviously there was another attack not too long ago as well. And I just want to reassure the public they are not connected, those two things," he said.
He was referring to an axe attack on a woman in Leixlip.
He described the Clondalkin case - in which a 43-year-old woman was set on fire at her home - as “an absolutely horrendous attack”, now upgraded to attempted murder.
The woman remains in a critical condition with burns to 60% of her body.
A suspect has yet to be identified.
The earlier Leixlip case involved a woman in her 50s attacked with an axe during an early morning assault by a man known to her, before he set the house alight and later took his own life.
The man entered her home through a window after he climbed up a roof.

Four New Bus Shelters Approved For Athgarvan And Maddenstown, Pending NTA Delivery
Two Men Arrested In Garda Operation Targeting Burglaries
Leak Shuts Junior Infants Class In 19-Year-Old "Temporary" School Building In Celbridge
Major DART+ Depot Confirmed For Maynooth-Kilcock Area But No Extra Stop Confirmed For Locals
Viral Infections Drive Long Waits At Naas Hospital And Other Emergency Departments, Says HSE
Kfm Recruiting Full-time News Journalist
Kerry's Jessie Buckley Nominated For Oscar
GRAPHIC IMAGE: "No Environmental Threat" To Horse Carcass Being Left In Athy Bog Drain, Says Council