A Valsayn businessman and his son are expected to be charged for the possession of a firearm and ammunition.
Both father and son were detained in a raid by police officers from the Special Operations Response Team at Lady Chancellor Heights, Port-of-Spain early this morning .
The men were held with 18 other males and 22 women at a party termed Secret Sunday.
Investigators say contrary to reports the house was not a guest house, but rather a four-storey dwelling house.
The businessman and his son had been formally charged with similar offences in 2016, which are still before the courts.