An AMBER Alert was issued on behalf of the Montgomery County Police Department after two children disappeared with a 35-year-old man.
The two children are Kingston and Karina Perry.
Kingston is a nine-year-old, African American male who is about four feet tall and weighs 60 pounds.
Karina is 18 months, two feet tall and weighs 30 pounds. Virginia State Police did not have a clothing description for the two children.
Police said the children are in the company of Dwight Reylando Perry, 35, a six-foot tall African American male who weights around 190 lbs. He has a Mohawk-style haircut.
The three were last seen about 1 p.m. Tuesday in Gaithersburg, Montgomery County.
Dwight Perry should be operating a blue, 2016 Toyota Camry, four-door, with Maryland tag 5DF8922.
If seen, call 911 immediately, police said. Do not take further action.
Contact MCPD for further information.