PIERRE, S.D. (AP) — South Dakota’s attorney general will investigate Minnehaha County’s top prosecutor over his absence from work.

Gov. Kristi Noem sent a letter Wednesday to Attorney General Jason Ravnsborg requesting an investigation of State’s Attorney Aaron McGowan.

McGowan was out of his office starting in mid-July. He returned to work Sept. 9, telling the Argus Leader he was out for medical reasons.

Ravnsborg tells KELO-TV he won’t prejudge the situation, but see where the facts lead.

In her letter to Ravnsborg, Noem cited the prosecutor’s “extended absence” and said “an investigation is necessary to determine if grounds for removal exist or not.”

McGowan said he welcomes the investigation and “looks forward to an accurate and credible determination of the facts.”

McGowan was first elected in 2008. Minnehaha is South Dakota’s most populous county.