AUGUSTA — Maine’s attorney general is signing on to a letter saying Craigslist should remove its adult services section because the website cannot adequately block potentially illegal ads promoting prostitution and child trafficking.

A spokeswoman for Attorney General Janet Mills said today that Mills is signing the letter with attorneys general in at least 17 other states.

The letter acknowledges Craigslist could lose revenue by removing the adult services section. But it says no amount of money can justify illegal prostitution and the victimization of women and children.

Craigslist says it supports states’ efforts to stop illegal exploitation and hopes to work closely with them to prevent misuse of its site.