Police say they are still awaiting the results of tests to find out how Mary Roberts was murdered.
The body of 50-year-old Mary was found in the a car park at the back of Risbygate Street, Bury St Edmunds, at around 9am on March 27.
Police are still appealing for witnesses.
Two men, aged 55 and 59, both from Bury, are on police bail after being arrested on suspicion of murder.
They are due to return to Bury Police Investigation Centre in early June.
Anyone with information should call the joint Norfolk and Suffolk Major Investigation Team on 101 or Crimestoppers on 0800 555111.