Just before 4.30am, police were called to Plover Grove after the driver had reported that he had been threatened by two women after he stopped to drop them off at a house in the street.
One woman who was armed with a knife demanded cash from the driver, but he managed to disarm her before both women ran off.
The driver was not injured and nothing was stolen from the taxi.
There is minimal description available of the women apart from both of them being of Caucasian appearance, aged in their early 20s with one in a yellow dress and the other in a pink dress.
Sturt Police have arrested two men after a taxi driver was robbed at Mitchell Park this morning, and are now appealing for two men who came to the aid of the driver to come forward.
Just after 1am, police were called to Marion Road near the Marion Hotel after a report of two men allegedly assaulting a taxi driver. The men stole cash before fleeing.
A short time later, another patrol stopped and spoke to two men matching the description of the suspects in nearby Parkholme.
A 20-year-old man from Glengowrie and a 19-year-old man from Morphettville were arrested and charged with aggravated robbery. Both were refused bail and will appear in the Adelaide Magistrates Court on 21 September.
The taxi driver was taken to the Finders Medical Centre and treated for minor facial injuries.
Two men who attempted to intervene were also allegedly assaulted by the arrested men, and were seen on CCTV footage near the incident. They left the scene prior to police arrival.
The older of the two men was wearing a black beanie, grey/white chequered jumper, white shirt and grey pants. The younger male has light-coloured hair and was wearing a black jacket with white trim, white shirt and grey pants.
Police would like to speak to the men as they may be able to assist in the investigation.
Police are investigating an armed robbery of a taxi driver in Logan Central.
Around 12.30am a 29-year-old taxi driver collected two men from Omar Street in Woodridge. The men asked the driver to stop at the intersection of Albert Street and Ewing Road, Logan Central. Once there, both men produced a knife and demanded money from the driver.
The driver complied with demands and the men fled on foot with a sum of cash and were last seen on Jean Street. The driver was not physically injured during the incident.
Investigations are continuing.
Fawkner Embona detectives are on the hunt for two men who assaulted and robbed an elderly taxi driver in Coburg North last week.
Investigators have been told the 82-year-old taxi driver had arrived early for work at the depot in Lily Street when he was confronted by two men about 4am on 3 September.
One of the men began hitting him with a wooden stick while the other made demands for cash.
The elderly man handed over a small amount of money and the duo fled on foot.
Detectives are investigating the incident and believe the robbers initially tried to break into the depot office before approaching the victim.
Investigators have released CCTV footage and images of two men they wish to speak to over the incident.

At about 2am, police were called to the intersection of Folkestone and Morphett Roads after reports that three males had assaulted the driver and stole cash from the taxi.
He did not suffer serious injuries.
The three suspects are described as all being of Aboriginal appearance and aged in their late teens, all of them between 176-178cm tall with two of the suspects wearing black jumpers (one hooded jumper) and the other a white jumper with black markings on it.
Police are appealing for witnesses and have charged a man following the alleged robbery of a taxi driver on the Central Coast last night
About 10.50pm (Monday 10 August), two men and a woman got into a taxi on Weemala Street, Budgewoi.
The passengers had a conversation with the driver, and one of the men handed over a mobile phone as surety.
They were driven to Ocean Parade, where one male passenger allegedly threatened the driver with a syringe, took back the mobile phone and stole the driver’s own phone.
The three passengers got out of the taxi and ran from the location.
The taxi driver attended The Entrance Police Station and reported the robbery. Officers from Tuggerah Lakes Area Command commenced an investigation.
Following an intricate investigation, yesterday (Tuesday 25 August 2015), officers attended a business on Wallarah Road, Gorokan, and arrested a 20-year-old man.
He was taken to Wyong Police Station and charged with robbery in company and an outstanding warrant for an unrelated matter.
The man was refused bail to appear at Wyong Local Court today (Wednesday 26 August 2015).
Police are investigating following the armed robbery of a taxi driver in Algester overnight.
Shortly after midnight the taxi reportedly attended Dalmeny Street to collect a fare when a man entered the taxi, produced a knife and demanded money from the driver.
The taxi driver complied with the demands and the man fled the scene on foot with a sum of cash and a mobile phone.
The 28-year-old male taxi driver was not physically harmed during the incident.
Investigations are continuing.
Police are appealing for witnesses after a taxi driver was robbed in Ormond on 26 May.
Investigators have been told the driver picked a male passenger up on Ormond Rd, Ormond around 11.50pm.
It is alleged the man produced a knife before demanding money from the taxi driver.
The victim handed over a small amount of cash and the offender exited the cab and fled the scene.
He is percieved to be Caucasian, in his mid-20s, 183cm tall with a thin build.
At the time of the incident the offender was wearing a grey hooded jacket, blue jeans and black gloves.
The taxi driver was not injured during the incident.
Police have released images of a man that may be able to assist with their enquiries.
Anyone with information about the incident or who can identify the man is urged to contact Crime Stoppers on 1800 333 000 or visit www.crimestoppersvic.com.au
First Constable Louise Jones
Media Officer
43769/2015
Police are investigating the armed robbery of a taxi driver in Coffs Harbour overnight.
About 12.20am today (Sunday 2 August 2015), a taxi was called to Kurrajong Street, Coffs Harbour. On arriving at the location the taxi was approached by a man described as Aboriginal/Torres Strait Islander appearance, aged about 16 or 17 years old, 175cm tall, and wearing a dark coloured hooded jumper and long pants.
The man produced a bladed weapon and threatened the taxi driver, who handed over a small amount of cash.
The taxi then drove from the scene. The driver was not injured.
Police are investigating the armed robbery of a taxi driver in Eight Mile Plains early this morning.
At around 12.30am, a taxi driver was waiting at a rank outside a licensed venue at the corner of Logan and Gaskell Roads when a man sat in the front passenger seat, produced a knife and demanded the driver’s wallet.
The driver sustained cuts to his hand as he exited the taxi.
The man left the scene in a vehicle. At this stage, it is not known whether the man stole any items.
The taxi driver drove himself to the Queensland Elizabeth II Jubilee Hospital for treatment.
Investigations are continuing.