The Phelps County Sheriff's Department has issued an Endangered Person Advisory for a missing four year old girl.
They say Cassandra Robertson was last seen at the 11800 block of State Rd V in Rolla Monday.
They believe she may have been taken out of state by her mother Nikie Robertson.
The girl's mother is believed to be driving a Silver 2006 Nissan Quest with Missouri license plate number FG2D5J.
Nikie is a white female, age 39, 5'6", 145 lbs, brown hair, green eyes, wearing a black shirt and blue jeans.
Cassandra, is a white female, age 4, 2'6", 40 lbs, brown hair, blue eyes, wearing a gray zippered shirt with a Hello Kitty logo.
In their advisory police, say Cassandra currently has an eye infection requiring medication. Her mother has a history of suicidal tendencies and substance abuse. Police believe the pair may be headed to Las Cruces, NM or Colorado.
Anyone seeing the two or their vehicle should call 911 to contact the nearest law enforcement agency or call the Phelps County Sheriff's Department at 573-426-3860