Three people have been arrested on suspicion of administering a noxious substance after the death of a woman in Ipswich last night.
Police were called just after 11.30pm last night to a property in Hogarth Road to reports that a woman was in cardiac arrest.
The woman - who was in her twenties - was pronounced dead at the scene.
Officers remain on scene at two properties in Hogarth Road this morning.
A 33-year-old man, a 21-year-old man and a 38-year-old woman, who are all from Ipswich, have been taken to the Martlesham Police Investigation Centre where they remain.
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Increasing cloud and rain overnight. Blustery and cold tomorrow.
Events are taking place in Cambridge, Norwich, Colchester, Southend and Lowestoft today, to mark Holocaust Memorial Day.
Cloud will increase through the day with rain arriving by dawn.