Police investigating 2009 stab murder search Derby park
A team of police officers are searching a park in Derby as part of a continuing murder investigation.
The squad is searching Normanton Park after the death of David Campbell in March 2009.
Nine people were convicted of conspiracy to commit grievous bodily harm to a friend of Mr Campbell, but acquitted of the 44-year-old's murder.
The case ended at Nottingham Crown Court in February, but police say they have new information about the death.
Mr Campbell died of stab wounds after an incident on Crewe Street in the city on 30 March 2009.
'Brought to justice'
Det Supt Andrew Stokes said: "We are acting on new information received in connection with Mr Campbell's murder and are seeking fresh evidence.
"We have always said that if anything new came to light we would investigate it.
"I also want to take this opportunity to say if anyone knows anything about Mr Campbell's murder who hasn't yet come forward then we want to speak to you.
"There is still a family involved who do not know who killed their loved one and the people responsible have yet to be brought to justice."