A woman in her twenties who was questioned after a four-month-old boy died 'suddenly' in Co Mayo has been released without charge.
The baby, from Bohola Co Mayo, suffered serious injuries and had to be resuscitated by paramedics at his home on December 28.
Bohola is a small village in east Mayo, located along the N5 road to Castlebar.
A file will now be prepared for The Director of Public Prosecutions and they confirmed investigations to be continuing.
The baby was taken by ambulance to hospital and later removed to Our Lady’s Children’s Hospital, Crumlin where he was pronounced dead on January 1.
Gardaí say they are now investigating the "sudden and unexplained death" of a youngster.
They also said they are not releasing the post-mortem results for "operational reasons".
It's suspected the baby, who was born 11 weeks premature, died from head injuries.
A woman aged in her 20s was arrested yesterday as part of the investigation. According to reports, the woman is the infant's mother.
She was detained at Claremorris Garda Station under Section 4 of the Criminal Justice Act, 1984 and was released on Thursday morning.
Local councillor Michael Kilcoyne said the entire community in Bohola are “shocked and saddened”.
“Everyone in Bohola is shocked. The community is deeply saddened that a local baby has died,” Mr Kilcoyne told Independent.ie.
“It’s a small community where people look after one another and we’re anxious to find out what happened.
“People are understandable very upset at the news.”