6:45 a.m. ET: More than 50 people have been killed and over 200 injured in the mass shooting in Las Vegas on Sunday night, according to Las Vegas Metropolitan Police Department Sheriff Joseph Lombardo.

Lombardo also named 64-year-old Stephen Paddock as the gunman in the attack.

The police department also said it had located two vehicles of interest and was “confident” it had located Marilou Danley, a woman named earlier by police as a person of interest in the investigation.

5:24 a.m. ET: Las Vegas police have released an image of the woman being sought for questioning after a mass shooting that killed more than 20 people and left over 100 injured.

Police want to speak to Marilou Danley, 62, who is around four feet eleven inches tall and weighs 111 pounds. Anyone who has seen Danley should call 911.

Police said that they shot one gunman dead in the Mandalay Bay Hotel and do not believe that there is another active shooter, but described Danley as a traveling companion to the suspect.

Officers are also seeking two vehicles: A Hyundai Tucson with the Nevada licence plate 114B40 and a Chrysler Pacifica with Nevada licence plate 79D401.

5:03 a.m. ET: Police have now confirmed that the suspected gunman was killed on the 32nd floor of the Mandalay Bay Hotel. The resort is located on the main Strip that runs through the Nevada casino enclave and is less than three miles from Las Vegas’s main airport, McCarran International Airport.

Police have shut down much of the strip as a result of the attack, while reports on social media suggest that the Thomas & Mack Center—an arena located on the University of Nevada’s Las Vegas campus—is being used by police as a refuge for victims.

4:36 a.m. ET: More than 20 people have been killed and “well in excess” of 100 injured in the mass shooting that took place at a country music festival in Las Vegas on Sunday night, according to police.

Las Vegas Metropolitan Police Sheriff Joseph Lombardo said that one suspect had been shot dead inside the Mandalay Bay hotel and that police were not looking for any more suspects.

“Right now we believe it’s a sole actor, a lone wolf type actor,” said Lombardo.

Lombardo said that the suspect resided locally and that police were looking for a female traveling companion of the suspect. The woman is called Marilou Danley, is around four feet eleven inches tall, and weighs around 111 pounds.

The sheriff said that rumors on social media of shootings or explosives at other hotels in Las Vegas were false.

He said that two police officers were among the injured, with one in a critical condition.

Lombardo also said that police were looking for two vehicles in connection with the attack and asked anyone with video footage of the attack that could help the investigation to submit it to the police department’s headquarters, located at 400 S Martin L. King Boulevard, Las Vegas.

Read more: What you need to know about the Route 91 Harvest Festival that was attacked in Las Vegas

3:47 a.m. ET: Video footage of the shooting shared on social media shows chaos at the Route 91 Harvest country music festival after what sounded like automatic gunfire broke out. Some have suggested that the gunfire came from a shooter in the Mandalay Bay Resort.

In one video posted to Instagram, a burst of automatic gunfire is heard, prompting some people to shout: “Those aren’t real gunshots!” Concertgoers lie on the floor before moving for fear of being trampled. Someone suggests that the shots were fireworks.

 

 

3:35 a.m. ET: Las Vegas police said that they do not believe there are any more active shooters on the scene. A police briefing on the shooting is scheduled for 12:45 a.m. local time (3:45 a.m. ET).

3:31 a.m. ET: Sunday night’s shooting took place during the Route 91 Harvest country music festival, an open-air event that was taking place near the Mandalay Bay Resort, where it is thought a gunman or gunmen opened fire on people attending the festival.

Jason Aldean, a U.S. country singer, was performing when what sounded like automatic gunfire broke out. Aldean rushed off stage when the gunshots broke out, one witness told Fox News.

Another performer at the festival, Jake Owen, tweeted that he was okay. “I witnessed the most unimaginable event tonight. We are okay. Others aren’t. Please pray,” said Owen.

 

 

3:20 a.m. ET: Police have asked the public to stay away from the strip in response to reports of individuals coming to offer assistance.

A Las Vegas Metropolitan Police Department spokesman said: “Please, steer clear of the area. We have all the resources from Las Vegas Metropolitan Police Department as well as our partner agencies coming down to bear on this siutation. So please, stay away from the area.”

Police have also been dispatched to the Ali Baba Restaurant and were investigating reports of a shooting at the New York-New York Hotel and Casino in Las Vegas, according to the New York Times.

3:04 a.m. ET: Las Vegas police have confirmed that one suspect in the mass shooting is “down” but have asked people to remain away from the strip because an “active investigation” is still ongoing.

 

 

McCarran International Airport, which is less than three miles away from the Mandalay Bay Resort, announced that flights in and out of the airport have been “temporarily halted” while police respond to the incident.

 

 

2:56 a.m. ET: At least two people have been killed and 24 injured with suspected gunshot wounds after the reported mass shooting, a Las Vegas hospital spokesman told Reuters.

Reports suggested that one or several gunmen opened fire on people attending the Route 91 country music festival. One eyewitness told CNN that he saw a gunman shooting from “several floors high” in the Mandalay Bay Resort.

Las Vegas police have asked people not to share or livestream police locations on social media, as this may put emergency responders in danger.

 

 

2:43 a.m. ET: Multiple SWAT teams were deployed to the hotel but officers were pinned back by gunfire, according to police scanner traffic reported by the New York Times. Police reported clearing the 29th floor of the hotel and were working up to the 32nd floor.

 

 

2:33 a.m. ET: Police in Las Vegas are investigating reports of an active shooter after gunfire broke out at a concert at the Mandalay Bay casino, with reports of multiple casualties.

The Las Vegas Metropolitan Police Department has advised the public to avoid the south end of the strip and has closed Las Vegas Boulevard at the Tropicana casino.

Videos shared on social media showed a concert taking place at the Mandalay Bay casino, before what sounded like rapid gunfire broke out. At least one gunman is reported to have opened fire at the country music festival, the BBC reported.

 

 

This story is no longer being updated.