GRAND JUNCTION, Colo. -- The search for a Grand Junction woman who has been missing for two weeks intensified over the weekend as hundreds of volunteers set out in search of information in the case.

Searchers found 34-year-old Paige Birgfeld's checkbook and a series of checks along a two-mile stretch of a highway.

Friends, relatives and volunteers spent all day Sunday looking in the area where her car was found on fire about two miles from her home.

The mother of three was last seen on June 28. She was reported missing two days later.

Birgfeld worked as an adult dancer and a topless masseuse, officials said. She was the owner of Models Inc, which provided exotic dancing, erotic massage and escort services.

After restarting her relationship with her first husband, Paige Birgfeld was known to have met with him Thursday in Eagle and to have spoken with him by telephone that night, telling him she was near her home, according to police.

Her first and second husbands have cooperated with investigators.

Anyone with information about the case is asked to call the Mesa County Sheriff's Office at 970-244-3500.