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.
More top news
Clear skies for a time tonight before low cloud, mist and fog returns
Govia Thameslink has taken over services on First Capital Connect routes promising more trains and better punctuality.
Coroner records narrative verdict on death of Latvian teenager on Sandringham estate