Diep River police recovered a black bag containing gren-ades and explosive devices on Friday April 1 at a house in Diep River.
Among the confiscated items were 123 grenades; three rocket hand held flares and 124 37mm explosive devices.
A further raid was conducted on Monday April 4 when personal items belonging to the homeowner were removed.
Warrant Officer Keith Chandler said they had received a tip-off from a known informant who came into the Community Service Centre with information about the explosives.
After further investigation the house in Diep River was identified as the home of an ex-police officer.
The owner was not there and the police removed the crates containing explosive devices and then contacted the bomb disposal unit.
Warrant Officer Chandler said these type of devices used to be issued to public order police (POP) units in the case of riots.
A case was opened for investigation and no arrests have yet been made. The case will now go to court where the magistrate will determine if there is a charge or they will decide what the next step is by the police.
Michael Kent, chairman of the Community Police Forum, said he has no knowledge of the raids.
On Tuesday April 12, Diep River police were asked for a status report regarding the case and said it has been taken over by the provincial task team.