SIOUX CITY, Iowa (AP) — Police say a Sioux City man attacked his girlfriend with a hammer because she refused to let him tattoo his name on her chest.

The Sioux City Journal reports that 28-year-old Jonathan Michael Boggs has been charged with aggravated domestic assault and going armed with intent. He was being held Tuesday in the Woodbury County Jail on $10,000 bond and could not be reached for comment.

Police say Boggs wanted the woman, whom he had been dating for about a month, to let him tattoo his name on her chest Friday. When she refused, an argument ensued, and she attempted several times to leave the house. Police say Boggs kept her from leaving and threatened to kill her with a hammer. He later hit her with the hammer.