Houston police searching for missing person diagnosed with dementia

HOUSTON - The Houston Police Department needs your help locating a missing person. 

Authorities need help locating Mary Louise Johnson.

Authorities are looking for 84-year-old Mary Louise Johnson, who was last seen in north Houston. 

Johnson was last seen leaving the 8300 block of Constellation Lane in an unknown direction wearing a gown on February 29.  

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Johnson is described as a black woman, weighing about 200 lbs and 5'3, with brown eyes and gray hair.

Police said Johnson is diagnosed with dementia. 

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If you have any information, contact the Houston Police Department Missing Persons Unit at (832) 394-1840.