The case was reopened in 2002 using new DNA techniques.
Times, Sunday Times (2006)
It was only after her lawyer wrote to the chief inspector that the case was reopened .
Times, Sunday Times (2012)
Definition of 'case'
case
(keɪs)Explore 'case' in the dictionary
countable noun
A case is a crime or mystery that the police are investigating.
Definition of 'reopen'
reopen
(rioʊpən)Explore 'reopen' in the dictionary
verb
If police or the courts reopen a legal case, they investigate it again because it has never been solved or because there was something wrong in the way it was investigated before.