The House Ethics Committee is pressing ahead with its investigation into allegations involving Rep. Mike Collins (R-GA) and his chief of staff, Brandon Phillips.

Collins, a Georgia Republican who is running in a competitive three-way GOP primary for the state’s U.S. Senate seat, is facing renewed scrutiny after the bipartisan panel said it is extending its review of referrals sent by the Office of Congressional Conduct last fall. Committee leaders said that the extension is meant to allow more time to gather information and does not signal any finding of wrongdoing.