Two police officers killed in Champs Elysees shooting

One suspect shot dead At least one other suspect thought to be on the loose

Central Paris in lockdown

Attack comes three days before presidential electionFrance under state of emergency

France under state of emergency

9:44pm - Police now saying Paris attacker appeared to be alone

There are conflicting reports about how many people were involved in the Paris attack, but police have now reportedly stated that the dead attacker appeared to be alone. 

 Paid content6 Habits That Destroy Your KidneysFitHogThings That Scientists Can't SolveDepostsRecommended by9:40pmTributes paid to police officers

François Fillon, the scandal-hit conservative presidential candidate, also paid tribute to the police officers, as did Benoit Hamon, the Socialist contender.

9:34pm - Police helicopter searching central Paris for suspects

A police helicopter was patrolling the area. A police source said it was equipped with a huge searchlight to help track down any attackers that might be on the run.

Bernard Cazeneuve, the prime minister, has joined President Hollande at the Elysée Palace for an emergency meeting.

9:31pm - Champs Elysees on high alert

9:27pm - Attacker's home being searched

Security forces are searching the home of the dead gunman in the east of Paris.

9:24pm - Second policeman dies of wounds

The second policeman injured in shooting has died of his wounds, police sources told Reuters.

President Hollande has called an emergency security meeting.

9:23pm - Anti-terror police open investigation

Anti-terrorist prosecutors have opened an investigation, indicating that the motive is believed to have been terrorism, and the attacker was known to the intelligence services, security sources said.   

Mr Brandet, the interior ministry spokesman, confirmed that one police officer was killed and another was fighting for his life after being seriously wounded.

9:21pm - Police: dead suspect 'was known to security services'

Reports that the gunman killed was known to police.

9:14pm - BREAKING Shots fired at new location near Champs Elysees

Police sources tell Reuters there is a second shooting in the area.

9:10pm - 'Several assailants in attack'

According to FranceTV Info, there were several assailants, some of whom were still at large.

9:09pm - Trump: 'It never ends'

The US president has said: "It looks like another terrorist attack. What can you say? It never ends."

9:04pm - Robbery took place at same time as shooting

Pierre-Henry Brandet, the interior ministry spokesman, said one police officer was killed and two seriously wounded.

“The attacker was shot dead by police and the area remains cordoned off,” Mr Brandet said. 

A car stopped near a police van before the attack and was found abandoned. It was suspected that the gunman used it to reach the scene of the attack.

Mr Brandet said a robbery may have been carried out at the same time as the attack. It was unclear if the two were linked. 

He said several Métro stations had been closed while police make sure the area is safe.

Ambulances and police vans were seen parked in the middle of the Champs-Elysées near the Arc de Triomphe, with their blue lights flashing, and forensics officers were also at the scene.

8:58pm - Champs Elysees remains sealed off, metro not stopping

8:56pm - Attack comes just three days before presidential election

The attack came three days before the first round of balloting in France's tense presidential election. Security is high preceding the vote after police said they arrested two men Tuesday in what they described as a thwarted terror attack.

The two terror suspects were arrested in Marseille on Tuesday and found an arsenal of weapons and bomb-making equipment in their flat along with an Islamic State (Isil) flag.

It quickly emerged that police had been watching the pair for several weeks before they finally detained them on suspicion of plotting “an imminent and violent attack” in the run-up to Sunday’s first-round vote.

8:49pm - 'Nothing is being ruled out'

Yvan Assioma of the police union Alliance said:

The exact circumstances are still unclear but I can confirm the tragic death of one of our colleagues. Our thoughts are very much with the family. One or several attackers have been shot dead by the police. Some officers were hit but the bullets were stopped by their bulletproof vests, but two were hit.

Nothing is being ruled out for the time being, terrorism or a criminal act.

8:48pm - Details of attack emerging

One of the suspects got out of a car and began shooting "with a Kalashnikov", hitting a policeman, an eyewitness has told Reuters.

The officer killed was apparently in a car stopped at a red light.

8:46pm - Helicopters flying low over city centre

Hundreds of heavily-armed officers are out in force on the Champs Elysees and around the Place de la Concorde.

8:39pm - At least two attackers in Paris shooting

Police state there were at least two people involved in the shooting, one of them has been killed.

8:35pm - Shooting happened near Franklin D Roosevelt metro station

The shooting happened near the Métro station Franklin D Roosevelt and the Marks and Spencer store on the Champs-Elysées.

Shops closed their shutters and restaurants locked their doors. Customers remained inside.

8:31pm - Suspect shot dead

The person who fired at police in Paris has been killed, police sources told Reuters.

8:30pm - Police officer killed in central Paris shooting

One of the police officers shot at on Champs Elysees has died, reports said.

The centre of the city is in lockdown.

The wide pavements of the iconic avenue were deserted after the shooting and police urged the public to avoid the area.

People ran for cover and witnesses reported seeing people in tears near the scene.

8:27pm - Reports of police officers being shot at in central Paris

Two police officers have been shot in central Paris, according to reports.

Officers were also investigating a "suspicious package".