A man arrested on suspicion of murder following the discovery of a body in Needham Lake has been detained under the Mental Health Act.
The 58-year-old man from Ipswich is no longer under police arrest and has been detained under section 2 of the Mental Health Act after he was arrested at Wissett Lake at 3.45pm on Sunday afternoon.
The body of a woman was found in Needham Lake just after 8am on Sunday morning. Suffolk Police are still treating it as a murder investigation.
A post mortem examination has taken place but police are yet to formally identify the body.
Police want to speak to anyone who was in the area of Needham Lake between 4pm Saturday 19 February and 8am Sunday 20 February, particularly in the early hours of Sunday morning, and anyone who was at Wissett Lake between 4pm on Saturday and 4pm on Sunday.