CRANBERRIES singer Dolores O'Riordan was singing in her cell after her arrest over an alleged air rage incident on board an Aer Lingus transatlantic flight.
Gardai became concerned for the star's well-being after she spent three hours in the cell and called a doctor to assess her.
Ms O'Riordan was brought to University Hospital Limerick (UHL) at 10am yesterday. She was released into the care of her mother, Eileen, later in the afternoon.
The 43-year-old must now await the decision of the Director of Public Prosecutions (DPP) on whether she will face charges.
The former 'Voice of Ireland' mentor, who recently moved back to Canada with her family, was questioned at Shannon Garda Station in the early hours of yesterday morning in relation to a Section 3 assault that allegedly took place on a flight from New York to Shannon.
The incident on the aircraft resulted in an assault on a flight attendant and later on a garda who was called to the scene. Ms O'Riordan was taken from the plane and brought to Shannon Garda Station for questioning.
Gardai confirmed Ms O'Riordan had left garda custody and was free to leave the hospital. A file will now be prepared for the DPP.
At the O'Riordan home yesterday, the family declined to comment on the matter.
The incident also resulted in the hospitalisation of the flight attendant, named locally as Carmel Coyle, who suffered damage to her foot after the star allegedly stamped on it. Gardai were called to meet the EI-110 flight shortly before 5am. She was later released from hospital
But the incident continued to escalate after one of the two gardai called to the scene was allegedly head-butted by the star. It is also alleged that she spat in his face.
Ms O'Riordan had been "disruptive" on the flight prior to landing in Shannon. It is understood the singer had left her seat and refused to sit back down when requested to do so.
The singer is then alleged to have stamped on the female flight attendant's foot.
The flight arrived in Shannon an hour and 20 minutes ahead of schedule at around 4.40am. However, passengers were not able to disembark for 20 minutes until ground handling staff began work at 5am. It's alleged Ms O'Riordan once again became disruptive and gardai were requested to meet the flight, with two officers boarding the plane.
While arresting the singer and bringing her to a waiting garda car, she allegedly head-butted a garda before spitting in his face.
One eyewitness to the incident said passengers became aware of the commotion when they saw a woman in business class standing up and shouting about 20 minutes before landing.
"It quietened down for a while and after landing it started again. We could see all this up along the aisle. We were told by the crew that there was a delay with the steps because ground staff weren't on duty yet. Our flight was nearly an hour and a half early," she said.
When gardai boarded the flight, the commotion continued.
"The curtains were opened a few times and at one stage we saw the woman thumping the ceiling of the plane.
"It was only after we got off the plane that we heard who it was. She was roaring at the cabin crew and at one stage I heard her say 'I pay my taxes'," the passenger added.
Another passenger on the flight tweeted that they saw the singer board the plane in New York wearing a red and black superhero mask.