Police Minister Jo-Ann Miller won't be investigated by Queensland's corruption watchdog.
The opposition referred the minister to the Crime and Corruption Commission (CCC) earlier this month after she phoned a man who made harassment and forgery claims against Labor MP Rick Williams.
"The CCC has determined it is in the public interest to confirm it will not proceed with an investigation," a statement issued on Thursday read.
The corruption body said its jurisdiction with regards to elected officials is limited to when one is accused of doing something that constitutes a criminal offence.
The minister had told state parliament she phoned the man because her natural instinct to help others is "strong and overwhelming".
But while the opposition leapt on claims of undue interference, the CCC says there are no grounds for a criminal probe.
The watchdog confirmed it interviewed the recipient of Ms Miller's phone call.
"The CCC's interview and subsequent assessment did not identify any criminal offences that may have been committed by the Minister for Police as a result of the phone call," it said.
At the time, Premier Annastacia Palaszczuk downplayed her minister's actions as an error of judgment.
"It will not happen again," she told parliament.
The Queensland Police Service said it acknowledged the CCC's determination and would not be acting upon the opposition's referral of Ms Miller either.
"The QPS has also completed its assessment into this matter and as a result has determined that no further action by the QPS will be taken," a police statement said.
"All relevant parties have been informed of the decision this afternoon."