Republican leaders in Indiana joined Democrats on Thursday in calling for the resignation of Curtis Hill, the state’s attorney general, who has been accused of groping four women at a bar in March.

The women said Mr. Hill, a Republican who was elected in November 2016, inappropriately touched them at a party in the early-morning hours of March 15, celebrating the last night of the legislative session.

Mara Candelaria Reardon, a Democratic lawmaker from Munster, wrote in an op-ed in The Times of Northwest Indiana on Friday that she was one of the women. She said he put his hand on her back, slid it down and grabbed her buttocks. She told him to “back off” and walked away, but he later approached her and put his hand on her back again, she wrote.

She said she planned to address it personally with Mr. Hill until she heard other women say he had touched them as well.