Parti Solidariti Tanah Airku (Star) president Jeffrey Kitingan said his party was no longer backing independent candidates.
"Independent candidates are not our candidates. (What they do) is beyond our control," he told reporters in Keningau today.
Chua himself claimed to have the "blessing" of the Perikatan Nasional (PN) coalition, which Star is a member of. He has been spotted campaigning in PN's colours.
Chua will be defending the Inanam seat against 10 other candidates, including a candidate from Parti Bersatu Sabah (PBS).
PBS is a "partner" of Gabungan Rakyat Sabah (GRS), a mega coalition which consists of the PN and BN coalitions, as well as PBS.
Meanwhile, Bersatu supreme council member Azmin Ali who was campaigning in Keningau today said PN cannot stop independent candidates from using the PN logo in campaign materials.
"It is evidence of PN's popularity, even among independent candidates. However, the PN leadership has made statements that we are not endorsing any independent candidate.
"This is because we (GRS) have candidates for every constituency. If (independents) want to use our name, I see that positively," he said.
In the case of Inanam, Azmin said PN will support GRS, and hence will be supporting the PBS candidate WilIiam Majimbon.
Follow Malaysiakini's coverage of the Sabah state election here.