D.C. police are asking for the public's help finding four teenage girls reported missing in separate incidents.

Unique Lucas, 16, was last seen in the 4000 block of Livingston Road SE at 4 p.m. Wednesday. Lucas is 5 feet, 7 inches tall and weighs 125 pounds. She has black hair, brown eyes and a dark complexion, and was last seen wearing a green coat.

Seyauna Parker, 14, was last seen in the 1300 block of Saratoga Avenue NE shortly after 11 p.m. Thursday. Parker is 5 feet 5 inches tall and weighs 130 pounds. She has black hair, brown eyes and a medium complexion. She was last seen wearing a purple jacket, yellow jeans and black sneakers.

Emerald Shaw, 15, was last seen 8 a.m. Jan. 10 in the 700 block of M Street SE, police said Friday. She is 5 feet, 5 inches tall and weighs 150-170 pounds. She has collar-length black hair and brown eyes. She was last seen wearing a gray shirt, black pants and black New Balance shoes.

UPDATE: Melvin Johnson, 12; Chasity Smith, 16; and Shamte Heaven, 15, have been found safe, according to police.

Critical Missing Person 16 y/o Unique Lucas B/F, 5’7”, 125 lbs, dark complexion, brown eyes, and black hair, green coat. pic.twitter.com/In4hlemwav — DC Police Department (@DCPoliceDept) February 3, 2017

Anyone with information is asked to call the Youth and Family Services Division at 202-576-6768 or the Command Information Center at 202-727-9099.