A memorial for murdered police officer Stephen Oake has been vandalised.
The memorial was unveiled by Mr Oake's widow last year
The marble plaque, outside the flat where the 40-year-old detective constable was stabbed to death, was broken and thrown at police cars.
The father-of-three, from Poynton, Cheshire, was stabbed to death during a raid at a house in Crumpsall, Manchester, in 2003.
Greater Manchester Police said the vandalism was "despicable" and showed "a total lack of respect".
A weapon was used to break pieces off the memorial on Crumpsall Lane on Tuesday night.
The pieces were then thrown into the car park of Cheetham Hill police station, damaging two police cars and a third belonging to a police officer.
The memorial was unveiled by Mr Oake's widow, Lesley, in a ceremony in September 2006.
Supt Catherine McKay, of Greater Manchester Police, said: "This is a despicable incident which is an affront to Stephen's family, his friends and his colleagues.
"The damaged memorial has now been removed out of respect for Stephen's family. It will be replaced when it has been repaired.
"This appalling incident shows a total lack of respect for a man who lost his life trying to protect members of the public across Greater Manchester."
Kamel Bourgass was convicted of the murder of Mr Oake, a special branch officer, and was jailed for life at the Old Bailey in 2004.
He was also convicted of taking part in a ricin poison plot.
More than 8,000 people have backed a campaign to posthumously award Mr Oake the George Cross.