Shooting broke out at a large concert hall near Moscow on Friday, Russian news agencies quoted emergency services as saying.

RIA news agency said at least three people in camouflage clothing had opened fire at the Crocus City Hall, and that some people had been wounded.

Police had arrived at the scene, RIA said.

Video footage published on Russian social media channels showed chaotic scenes, with a large crowd of concertgoers attempting to flee the hall, followed by gunshots.

Other video footage showed a number of people lying motionless in pools of blood outside the hall.

Reuters was unable immediately to verify the footage.

TASS news agency reported an explosion and a fire in the building where the shooting took place.

The Kommersant newspaper posted footage online showing smoke billowing from what it said was the concert venue building.

(Except for the headline, this story has not been edited by NDTV staff and is published from a syndicated feed.)

Kate, Britain’s Princess of Wales, said on Friday she was undergoing preventative chemotherapy after tests taken following major abdominal surgery in January revealed cancer had been present.

Kate, 42, the wife of heir-to-the-throne Prince William, spent two weeks in hospital in January after having what her office said at the time was successful, planned surgery for a non-cancerous but unspecified condition.

However, in a video message, Kate said subsequent tests had revealed cancer had been found, but she said she was well and getting stronger.

“My medical team therefore advised that I should undergo a course of preventative chemotherapy and I am now in the early stages of that treatment,” Kate said in the video which was filmed on Wednesday.

“This of course came as a huge shock, and William and I have been doing everything we can to process and manage this privately for the sake of our young family.”

King Charles revealed in February that he too was to have treatment for cancer, meaning he has had to postpone his public royal duties.

Her office, Kensington Palace, said it would give no further details about the type of cancer. It said she was on a recovery pathway and the preventative chemotherapy had begun in February.

After her operation, the palace said Kate would not return to official duties until after Easter, but her absence from public life has provoked intense speculation on social media.

She and William had wanted privacy about the cancer until their children, Prince George, 10, Princess Charlotte, 8, and Prince Louis, 5, began their school holidays which started on Friday.

“It has taken me time to recover from major surgery in order to start my treatment. But, most importantly, it has taken us time to explain everything to George, Charlotte and Louis in a way that is appropriate for them, and to reassure them that I am going to be ok,” she said.

“As I have said to them; I am well and getting stronger every day by focusing on the things that will help me heal; in my mind, body and spirits.”

Kate has not appeared at a public event since she joined other members of the royal family for a church service on Christmas Day.

(Except for the headline, this story has not been edited by NDTV staff and is published from a syndicated feed.)

Russian news agencies reported multiple casualties after a shooting incident at a concert venue near Moscow on Friday.

Here’s what is known about the shooting so far:

Unidentified gunmen opened fire at the Crocus City Hall in Krasnogorsk near Moscow on Friday evening during a concert of the band “Picnic”, TASS reported.

Preliminary information suggested machine guns were used in the shooting, TASS reported.

Eyewitnesses told Russian agencies there were many injured and dead.

Video posted online by Russian news agencies showed billowing clouds of smoke and flames rising from the venue building. TASS reported that people remain inside the building, which is almost completely engulfed in flames.

Special units of Russia’s national guard as well as police and firefighters are on the scene, TASS said.

(Except for the headline, this story has not been edited by NDTV staff and is published from a syndicated feed.)