A antheral has been arrested connected suspicion of execution aft the decease of a canine walker.
Anita Rose, 57, was recovered earnestly injured by a subordinate of the nationalist successful Brantham, Suffolk connected 24 July and died 4 days aboriginal successful hospital.
Detectives said a 55-year-old antheral had been detained successful Ipswich and was being questioned.
Three different radical were antecedently arrested and bailed successful transportation with the incident.
A Suffolk Police spokesperson said: "The antheral is presently being questioned astatine Martlesham constabulary probe centre, wherever helium remains.
"Specialist officers are supporting Anita’s household and keeping them updated connected the investigation.
"Anyone with immoderate accusation that whitethorn assistance with this enquiry is asked to interaction the large probe team."
Ms Rose had near her location astatine astir 05:00 BST connected 24 July and was discovered unconscious by a subordinate of the nationalist astatine 06:25 BST adjacent the Anglian Water sewage works and railway enactment disconnected Rectory Lane successful Brantham.
Villagers reported seeing an accrued constabulary beingness successful the country connected Thursday, including a chopper and canine units.