A fourth arrest has been made by police investigating the death of Kirkby-in-Ashfield man Colin Hall.
A 33-year-old local man was arrested in Kirkby-in-Ashfield at around 3pm yesterday.
He is currently being questioned at a local police station.
Police have until 9.15pm tonight to further question a 39-year-old man arrested on Friday, also in Kirkby-in-Ashfield.
Two other men, arrested in Hucknall in connection with the inquiry last Tuesday, were released without charge the next day.
Mr Hall died following an attack at his home in Cornerpin Drive, Kirkby-in-Ashfield, on the evening of Sunday 10 February.
Yesterday, police searched former colliery land off Park Lane, Kirkby-in-Ashfield as part of the inquiry.
A murder investigation has been launched after a pensioner was attacked at his home in Nottinghamshire.The victim, who was in his 70s, was attacked at Cornerpin Drive in Kirkby-in Ashfield around 9pm on Sunday. He collapsed and later died at hospital.
Tests have been inconclusive but have revealed the victim suffered an aneurism caused by the assault. Detectives believe a white man, of medium to heavy build, wearing dark clothing with a black hat or hood and a sleeveless, yellow high-visibility jacket may have been involved in the assault.
If you have any information, call the incident room on 01623 483953, Nottinghamshire Police on 101 or Crimestoppers on 0800 555 111.