Sydney police investigating two suspicious fires at a function centre linked to the Obeid family will charge a man for allegedly influencing two witnesses in the case.
Three people are already facing charges after the Bellevue Reception Centre in Bankstown was set alight in December 2016 and again in January 2017.
Elie Fares, 28, became the most recent arrest in December when he was charged with two counts of accessory before the fact to dishonesty for gain.
Detectives on Wednesday revealed Fares is set to face two additional counts of perverting the course of justice when he appears in Burwood Local Court.
"Police will allege in court that the man had influenced two witnesses who had provided statements to investigators," they said in a statement.
Further arrests are expected.
The reception centre is owned by Redpoc whose directors are Paul Obeid, son of corrupt former NSW minister Eddie Obeid, and a former business partner of the ex-MP, Walhan Wehbe.
Police have released security footage of the incident that shows two men lighting fires.
The first fire was put out relatively quickly on Boxing Day 2016 but left extensive smoke damage while the second blaze, on January 3, caused major damage to the building.