Specifically, the ethics committee is seeking "to determine whether Representative Blake Farenthold violated the Code of Official Conduct or any law, rule, regulation, or other applicable standards of conduct in the performance of his duties or the discharge of his responsibilities", according to the statement.
As allegations of sexual assault fly around Capitol Hill, Rep. Mia Love continues her push to change congressional sexual misconduct settlements in Congress and rid her workplace of inappropriate behavior. In the lawsuit, Greene said her boss sexually harassed her and created a hostile work environment.
The ethics committee said Farenthold is cooperating with the investigation.
The Committee has sought to interview Greene.
Nunes is expected to retake his position as the head of the House Intelligence Committee's investigation of Russian meddling in the USA election that was effectively stalled while the allegations were reviewed.
While the committee's statement did not name her, a lawyer for Farenthold's former staffer confirmed her identity last week. Susan Brooks, R-Ala., the chairman of the committee, and Rep. Ted Deutch, the ranking Democrat.
"Once all the facts are released, I'm confident this matter will once and for all be settled and resolved", he added. It added that while Farenthold has cooperated in the investigation so far, the probe has been "significantly delayed by difficulties in obtaining live testimony" from other key witnesses. "This investigation increases the transparency the public deserves and what I've wanted since the beginning".
Back in 2015, the Office of Congressional Ethics investigated Greene's allegations.
The case came to light again this week when Farenthold acknowledged that the settlement was paid out from taxpayers funds, which he agreed to repay. The aide spoke on condition of anonymity because the individual was not authorized to publicly discuss the agreement.