Live blog: Nice attack leaves dozens dead 
Three Australians have been injured as they fled from a truck which ???ploughed into a crowd in the French city of Nice, killing at least 80 people.
One woman, who was part of a tour group, and two others whose age and gender are yet to be confirmed received "minor" injuries as they ran from the truck, Foreign Affairs minister Julie Bishop said.
"I have just spoken with our ambassador in Paris, Stephen Brady, and we understand that three Australians have been injured," Ms Bishop said on Friday afternoon. 
"They have suffered minor injuries, seeking to flee the scene, to get away from the scene. We are working to provide consular assistance to all three."
Ms Bishop said she could not provide details on the trio's injuries.
The Australian Government reissued its travel advice for France in the wake of the incident, and is advising Australians in the area to "exercise a high degree of caution" and follow the advice of local authorities.
"This latest attack reminds us that no city, no country is immune from terrorist attacks, that's why the Australian Government will do all in our power to keep Australians as safe as possible, both at home and abroad," Ms Bishop said.
Other Australians were in the area when the truck plunged into the crowd, with a local official saying the driver opened fire before police shot him dead. The official said weapons and grenades were found inside the 25-tonne, unmarked articulated truck.
Tour operator Topdeck Travel confirmed a woman in one of their tour groups was taken to hospital after she ws injured in the attack.
Early on Friday morning, Tamworth father Dean Ellison received a call from his daughter Hannah, who was with a woman who was injured in Nice.
It's not clear whether she is the same woman who is on the Topdeck tour. Mr Ellison said his daughter and her friends managed to get out of the way of the truck when it hit the crowd.
"They have turned around and there is this truck sort of ploughing through people and just got out of the way in time," he told Channel Nine.
"One of the group of girls she was with got injured, not seriously thankfully, but she has been taken to hospital as a precaution."
Tori Anderson, another Australian tourist who was with the injured woman, said the scene was horrific with bodies "flying left, right and centre".
"Dead bodies were just tangled everywhere and we just had to run for our lives," she told Nine. "It is like there has been a world war."
Sydney man Marcus Freeman was walking back from the Bastille Day fireworks when the attack occurred around 11pm.
"All of a sudden we heard fire," Mr Freeman told ABC's Radio National on Friday morning. Mr Freeman said people initially thought the gunshots were more fireworks, but they quickly realised the danger.
"People ran through the streets, absolutely fearing the likelihood of getting shot," he said.
Fleeing to his nearby hotel, he described "people falling over" as they ran.
"We brought in about 10 people from the street and they're currently in our hotel room, and it's just mayhem," Mr Freeman said.
"It's just a devastating thing to see ... it's just so sad to see so many happy French people running, in absolute terror.
"Scary times ... it was all just panic. 
"There is still reports of potentially a gunman that was an accomplice that's out there," he told the Nine Network about 11.20am AEST.
Topdeck Travel has confirmed a woman in one of their tour groups was injured in the attack.
"They are with Topdeck staff and are currently being tended to in hospital," Topdeck global general manager Sarah Clark said.
Early on Friday morning, Tamworth father Dean Ellison received a call from his daughter Hannah in Nice.
Mr Ellison said Hannah had been with a woman who was injured. It's not clear whether she is the same woman as the one on the Topdeck tour. 
"They have turned around and there is this truck sort of ploughing through people and just got out of the way in time," he told Channel Nine.
"One of the group of girls she was with got injured, not seriously thankfully, but she has been taken to hospital as a precaution."
Tori Anderson, another Australian tourist who was with the injured woman, said the scene was horrific with bodies "flying left, right and centre".
"Dead bodies were just tangled everywhere and we just had to run for our lives," she told Nine. "It is like there has been a world war."
Melbourne couple Sasha and Danae Goldsmith recalled dragging their two young daughters to the ground when they heard the gunshots. 
"There was a whole lot of noise and then I thought, 'Why is the truck there?' It was just coming through the crowd," Mrs Goldsmith told Channel Nine.
"I thought, 'shit everyone's running' so we grabbed the kids and got down and then the gunshots all happened."
The couple told their daughters the sounds were more fireworks. 
"We put them to bed, so they haven't seen any of this, thank god," Mrs Goldsmith said.
Another tourist, 21-year-old Perth woman Katie Shaw, said she heard the gunshots as she and a friend ran terrified from a nearby bar when the music stopped.
"We had no idea what was going on - then all we could hear was gunshots," she said.
"My friend just grabbed me and we all went out the back stairs and had to sprint out staying low with guys ushering us away from the foreshore," Ms Shaw told AAP.
The Department of Foreign Affairs and Trade (DFAT) said anyone who has been unable to contact friends or family in Nice should call the 24-hour consular emergency centre on 1300 555 135, or +61 2 6261 3305 from overseas.
with AAP