The air ambulance has landed in Ipswich to attend a medical emergency near Stoke Quay.
According to a police spokesman, officers were called at around 5.53pm to reports of a medical incident near the Felaw Street Maltings, close to the Steamboat Tavern pub.
He said: "This was a medical emergency in the Stoke Quay area.
"A female was being treated for a suspected cardiac arrest."
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