UPDATE: The two missing Lincoln County children have been found unharmed in Oklahoma City.
OKLAHOMA CITY - Two missing Lincoln County siblings have been found safe in Oklahoma City Thursday afternoon.
Lincoln County officials issued an Amber Alert after 7-year-old Kylee Nichols and 4-year-old Blake Nichols were reported missing earlier in the day.
Authorities said the children were with with mother who does not have custody, 30-year-old Misty Hausam.
She has been taken into custody.
They said she is mentally unstable and a heavy drug user.
Family members said Hausam is bi-polar.
According to the Okla. Dept. of Corrections, she has two previous drug charges in Garvin County.
Lincoln County authorities said the children's father, Coy L. Nichols, went to check on them and found they were missing from their rooms.
Coy L. Nichols of Wellston is listed as the children's father in a paternity case; he is not indicated for any wrongdoing in this case.