The woman in her 50s was found dead at her home on Sunday
Investigations have been launched into a suspected outbreak of food poisoning, after the death of a Dublin woman at the weekend.
The kitchens of a north Dublin pub have also been shut pending the investigation.
It is understood a company has the franchise to provide food at the pub, and also provides an off-site catering service.
The Food Safety Authority of Ireland (FSAI) is liaising with the Health Service Executive (HSE) after a number of people were hospitalised and treated for suspected salmonella poisoning following a First Communion party.
A woman in her 50s was then found dead at her home.
The HSE says an investigation is ongoing.
Reporter with Independent News and Media is Conor Feehan.
"It's understood the food may have been made on a premises and then transported to the house for a First Communion party.
"But it seems that after the party, a number of people took ill.
"In this particular case a woman in her 50s was later found dead at home by her husband on Sunday", he added.