San Francisco police, FBI look for girl missing for 6 years

San Francisco police and the FBI are asking for help in finding a toddler who disappeared more than six years ago. 

The family of Arianna Fitts reported her missing in April 2016.

She was 2 and a half years old at the time.

She was last seen in Oakland ​in January or February of that year.

Several days after the girl was reported missing, her mother, Nicole Fitts, was found dead and buried in a San Francisco park. 

Investigators say Arianna was not with her mother when she was killed. 

The renewed call for help, comes on Arriana's 9th birthday.

Investigators released a progressed photo showing what she might look like now.