DENVER -

Colorado's Republican attorney general is following through with his threat to sue the Boulder County clerk for issuing same-sex marriage licenses.

A lawsuit filed Thursday by Attorney General John Suthers is the latest escalation in Colorado's gay-marriage legal fight.
    
A federal appeals court in Denver ruled last week that same-sex couples have the right to marry. The ruling was put on hold pending appeal.
    
Boulder County Clerk & Recorder Hillary Hall has been issuing same-sex marriage licenses, despite the stay and warnings from Suthers to stop. Suthers and Democratic Gov. John Hickenlooper have said same-sex marriages should wait until the U.S. Supreme Court settles the marriage question. Colorado's constitution currently bans same-sex marriage.
    
A Boulder County District Judge will hear Suthers' lawsuit on Wednesday morning.