UPDATED WITH PICTURE OF MOTHER: FOUND-- Endangered Alert Issued For Missouri Siblings Missing Since Friday:

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Jordan, Jasper and Tabitha Davis have been missing since October 11th

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An endangered Person advisory has been issued for three siblings who went missing from Cass County, Missouri on Friday afternoon.

The advisory is for 11-year old Tabitha Davis, 14-year old Jasper Davis and 15-year old Jordan Davis.

Authorities say their dad last saw them about 1:30 p.m. when they all had lunch together.  When the father returned home about three hours later, they were all gone, according to a press release from the Missouri Highway Patrol.  The children could have possibly been taken by their mother, who does not have custody.

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Jordan James Davis is a 15 year-old  white male, height 5' 6", 175 lbs, brown hair, blue eyes, light complexion - he last seen wearing a blue t-shirt, dark blue shorts, and flip flops.

Jasper Nathan Davis is a 14 year-old white male, 5' 6", 125 lbs, brown hair, blue eyes, light complexion - he last know to be wearing a dark shirt with white emblem on the front, white shorts, and red socks.

Tabitha Linn Davis is a white female, age 11, 4' 9", 85 lbs, blonde hair, blue eyes, light complexion with freckles - she was last seen wearing a blue t-shirt, blue jean shorts and Hello Kitty slippers.

Anyone who might know where the children are or what happened to them is urged to call 9-1-1 or the Cass County Sheriff's Office at 816-380-5200.

UPDATE 10-14-13:

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Sherri Lynn Davis aka Sherri Lynn O'Neal

The Cass County Sheriff's Office said in a release that the children could possibly be with their mother, 44-year-old Sherri Lynn Davis, who is also known as Sherri Lynn O'Neal. 

The sheriff's department said the mother was last known to be traveling in an RV with Arizona license plates or a black Mercedes SUV bearing Alaska license plates. She may also be traveling with five German shepherd dogs, according to the sheriff's office.

UPDATE 10-16-13:

All Three children were found by authorities in an RV in Canada by authorities in Calgary, Canada, who were on routine patrol.  It is not known at this time how the gained entry into the country as there was an active alert for Sherri Davis and her children.

Read more here: http://www.bnd.com/2013/10/14/2849819/police-3-missing-children-believed.html#storylink=cpy