EAST LANSING, Mich. (AP) — An embattled Michigan lawmaker who had an extramarital affair with another legislator is planning to break her weeklong silence since the scandal broke.

Republican Rep. Cindy Gamrat of Plainwell, north of Kalamazoo, has scheduled a Friday afternoon news conference at an East Lansing law firm.

She and Republican Rep. Todd Courser of Lapeer, in the Thumb region, are subjects of a House investigation into whether they misused public resources to hide their relationship and fired an aide who refused to help.

Gamrat, a tea party activist who took office in January, has not commented on the controversy or addressed calls for her resignation.

Courser says he orchestrated a false email claiming he had sex with a male prostitute to deflect attention from the affair. He says he was being blackmailed.