Gang of 49, assaults and robberies were at Christies Beach, Brighton, Somerton Park and Kurralta Park.
Assaulted and bashed by men who are believed to be members of the so-called Gang of 49.
Adelaide police say five men were involved in nine violent attacks over two hours late last night.
A 19-year-old woman who does not want to be identified says she was walking home with her mother after using an autoteller machine on Prospect Road when they were approached by two men demanding money.
The pair refused to hand over a handbag.
"They threw my mum to the ground and they were just hitting her in front of me and I couldn't stop them," the teenager said.
"They were just hitting her and hitting her and I didn't know what to do.
"They were dragging her along the ground and I tried to fight them off but I couldn't."
Police say five offenders assaulted a woman outside the Entertainment Centre at Hindmarsh.
The men also tried to steal a car from a woman at the corner of Sturt and Marion Roads.
Another target was a taxi driver at Noarlunga Hospital who was forced from his car and bashed.
His taxi was stolen but then returned.
Other assaults and robberies were at Christies Beach, Brighton, Somerton Park and Kurralta Park.
Police were also called to Croydon where a man was bashed and his car stolen. It was found hours later.
A Magna used by the offenders was found dumped at Wingfield.
