Texas EquuSearch joins search for missing mom

Texas EquuSearch volunteers joined the search on Monday for missing mother of three Michelle Parker.

Parker was last seen last on Thursday after dropping her kids off at her ex-fiance's home.

Over the weekend, an important piece of evidence was found. Searchers found her car parked at an apartment complex.

Parker's cell phone signal stopped transmitting in the area along Oak Ridge Road in Orlando, investigators said.

"We are open to any possibility to what could have happened. We are not trying to have a tunnel vision on one specific thing or person," said Parker's sister.

Parker's family denied that her ex-fiance was involved in her disappearance and that he's staying home with the children during the search.  

"He is crying right along with the rest of us.  He has done everything the cops have asked him to do gladly," said Parker's mother, Yvonne Stewart.

In the meantime, volunteers have been handing out hundreds of fliers, including her mother.

"Every Dumpster, you are like, 'Michelle, I hope you are not in here, baby I hope you are not in here.' And you get up and you crawl on top of stuff and you are like, 'This one is eliminated. You are not here.' That is what we are doing," Stewart said.

WFTV found out that Parker's SUV was in a parking lot at the Walden Palms Condominiums near the Mall at Millenia. 

"It wasn't parked like she went to an apartment.  I could be wrong.  It was parked like somebody was parked there," said witness Stephanie Devaughn.

 Sources told WFTV there was little or no evidence found in the SUV.  Also, a bloodhound was brought in but never discovered a viable scent to follow, investigators said.

Family and friends held a vigil for Parker on Sunday night.

"I’m mad.  I’m mad somebody took her and is doing this to her and our family," said Stewart.

Parker’s family joined hundreds of friends to pray for Parker’s safe return.  They held candles and told stories. 

 "I went in a crack house today, first time in my life, looking for my daughter," said Stewart.

There is a $5,000 reward being offered for information leading to Parker.

There are a few similarities between Parker's case and two other high-profile missing persons' cases in Central Florida.

Jennifer Kesse disappeared in January 2006. Her car was found abandoned at an apartment complex near the Mall at Millenia just as Parker's was.

A person was caught on surveillance video walking away from the car, but no arrests were made and Kesse hasn't been found.

Tracy Ocasio disappeared in 2009. She was last seen leaving a bar in the Metrowest area with James Hattaway.

Hattaway is the main suspect in her disappearance, but he has not been charged.

He is serving a life sentence for trying to kill another woman.