UPDATE: According to police, Shirley Plunk was found safe and sound behind a barn in Edwardsville.
Property owners were out horseback riding and located Plunk and her vehicle stuck in the mud at the end of a dirt road and called authorities.
The Madison County Sheriff's Office responded and immediately contacted the Alton Police Department.
The investigation is still ongoing, however, no foul play is suspected at this time.
ALTON, IL (KTVI)-- Alton police are hoping the public can help them find an 82-year old woman who has simply vanished.
A part-time visiting caretaker discovered both Shirley Plunk and her van missing from her apartment at the Hillcrest Senior Apartments in Alton Tuesday morning.
The caretaker is also the last person who reports seeing Plunk when she visited Monday morning at 11:00 A.M.
"She is just not the type of person who would take off," said Plunk`s daughter, Linda Wieneke.
Nothing in Plunk`s apartment was amiss, and she had no major health problems or severe dementia.
Police believe Plunk left in her 2006 green Chrysler Town and Country van, with Illinois license plates reading: C-E-P-S-M-P.
She has gray hair and is five foot two inches tall. She weighs 215 pounds. She gets around using a walker.
Her family is distraught, and can`t understand how she could just disappear.
"Right at the moment we are kind of lost," said Plunk`s son, Floyd Fessler. "We are looking everywhere and we just don`t know what to do."
Alton Police are using every tool available to them including social media to generate leads.
"Right now Facebook is going crazy with everybody sharing so hopefully somebody will see the posts and be able to tell us oh I just saw her," said Alton Police Public Information Officer Emily Hejna.
"We had the airplane from the Illinois State Police up in the air with one of our detectives riding along just to look to see if there is anything that we can`t see from ground level. We also had the St. Louis County helicopter up in the air looking," Henja said.
Police say there are no signs of foul play and that Plunk had no known enemies.
Family members say all her life Shirley Plunk has been the sort of person willing to offer anyone help.
Now the Plunk family needs everyone`s help finding Shirley.
"We`ve been looking everywhere," said Plunk`s daughter Linda Wieneke. "We just don`t have a clue."
Anyone with information is asked to call Alton Police at 618-463-3505.