Franklin Nkasu, 42, and her three daughters, Neika, 12, Neisha, 8, and Nia, 11, were last noticed at their home in Edmondson Park on June 11.
The family home is unknown and the police urge the public to locate them.
A report of homeless people was held on 11 July, leading Liverpool officials to release an investigation.
A boy from Sydney and his three young men have been away since June 11 and the police are now asking the public to locate them. Picture: Police NSW Source: Supplied
The government has “serious concerns” for the well-being of young people because of their young age.
Franklin Nkasu is described as African-looking, with a medium build, approximately 165 cm to cm tall and with dark brown hair.
The 3 women are also described as African-looking. The two older women, Neika and Neisa, have dark, curly hair.
Police are traveling on a bronze-registered ACT recorded by Nissan Murana.
Anyone with information is urged to contact Liverpool Police or Crime Stoppers.