Four men have been arrested for the 9 October murder of a Booysens police constable, police said on Friday.

Spokesperson Inspector Lorraine van Emmerik said the men were arrested in Soweto on Thursday night.

"Together with officers from the serious and violent crime task team, the Booysens trio task team, and Alberton police, our officers identified the four suspects around 4pm on Thursday and pounced on them at 23.45 in various houses in Zola and Braamfisherville," Van Emmerik said.

Constable Tyani Khosa was found stabbed in the head with his hands and feet tied together near a mine dump on Booysens Road last Thursday.

He was murdered just two days before marrying his pregnant fiancee in a traditional ceremony.

"Officers received a call to say that a police officer has been murdered and upon their arrival at the scene, they were shocked to find their colleague's body," Van Emmerik said.

When arresting the men on Thursday night, police confiscated a large sum of money and clothes they believe the men were wearing when attacking Khosa.

Police were still searching for a weapon used to kill Khoza and a service pistol that went missing when he was murdered.

Khoza, who had been with the SA Police Service since 2002, will be buried in Limpopo on Saturday.

"His colleagues describe him as a very loyal, dedicated policeman who was always ready to help his colleagues and the public whenever necessary.

"The station management would like to pass their condolences on to his family and friends," Van Emmerik said.

Khoza's alleged assailants, aged between 40 and 45, are expected to appear in the Booysens Magistrate's Court on Monday. They will be facing charges of murder.