Emergency services have been called to an incident on the Ravenswood estate in Ipswich.
The East Anglian Air Ambulance landed in Bonny Crescent after receiving reports of an incident shortly before 12pm on Monday.
Witnesses also reported seeing police cars and vans in the area.
Suffolk police later confirmed that a man had been arrested and a woman was left injured following an incident at an address in the nearby Loganberry Road.
A police cordon was put in place at the property.
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