A woman remains in hospital after a suspected acid attack at a takeaway in Dublin last night.
Gardai have described it as a serious assault and say the substance is being examined.
A woman in her 30s entered the premises at The Square Shopping Centre in Tallaght at around 8pm and threw a substance at the people behind the counter.
Three of the women were taken to hospital, and one woman is still receiving treatment.
A woman was arrested last night at around 10pm and is being detained at Tallaght Garda Station where she can be held for up to 24 hours.