A boy, 7, and a girl, 9, were last seen Sunday night. Police say they were with another child who ran away.

This story has been updated throughout.

Dallas police have found for two young children who went missing Sunday night with a 12-year-old runaway, police said Monday night.

Willie Britt, 7, and Faith Sophia Britt, 9, went missing around 9 p.m. in the 300 block of East Camp Wisdom Road. Police believed they may have been with 12-year-old Wonderful Britt.

Willie is 4 feet tall and weighs about 45 pounds. Faith is 4-feet-6 and weighs about 70 pounds. Wonderful is 5-feet-8 and weighs about 180 pounds, police said.

"Because of their ages, Faith and Willie may be a danger to themselves," police said in a written statement.

Anyone with information on their whereabouts is asked to call 911 or the missing persons unit at 214-671-4268.