(Raleigh, N.C.) (AP) — North Carolina officials sought criminal charges after the 2016 election against the man now at the center of absentee ballot fraud allegations, but prosecutors didn’t indict him before the now disputed 2018 congressional race, according to documents released Wednesday.

The documents detail a two year investigation by the North Carolina State Board of Elections into Leslie McCrae Dowless Jr. Elections officials have described the 62-year-old convicted felon from rural Bladen County whom as a “person of interest” in their ongoing investigation into irregularities in the Nov. 6 vote in the state’s 9th Congressional District.

The referral to state and federal prosecutors came months before a May GOP primary and November general election in which Republican Mark Harris eked out narrow victories.

Harris now leads Democrat Dan McCready by 905 votes, according to unofficial results. The state elections board has refused to certify the tally, and leaders in both parties now concede a do-over election might eventually be needed.