Ben Barba will be forced overseas if he is to resurrect his tarnished career once more after Rugby Australia chief executive Raelene Castle confirmed any ban enforced by the NRL would be honoured by the 15-man game.

The NRL is on Tuesday expected to announce its official position on Barba after integrity unit chief Karyn Murphy completed her investigation in Townsville on Monday.

Sacked: Ben Barba has had his contract torn up by the Cowboys. Credit:AAP

Murphy caught the first flight north after news of Barba's latest off-field incident broke on Friday and immediately sought the CCTV footage which allegedly shows Barba assaulting his partner Ainslie Currie at a Townsville casino on Australia Day.

The Herald understands Murphy has now seen the vision, wrapped up her investigation and spent Monday afternoon trying to catch a flight back to Sydney amid serious floods in Townsville which have sent the city into lockdown.