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(CNN)Celebrities offered sympathy and support for Las Vegas after the massacre that left at least 50 people dead. A gunman opened fire from the 32nd floor of the Mandalay Bay hotel into a country music festival on the ground, authorities said. At least 200 people were injured. Country singer Jason Aldean, who was performing on stage at the time, expressed sorrow on Instagram and asked that his fans "Pray for Las Vegas." "Tonight has been beyond horrific," he wrote. "I still don't know what to say but wanted to let everyone know that Me and my Crew are safe. My Thoughts and prayers go out to everyone involved tonight." A post shared by Jason Aldean (@jasonaldean) on Oct 2, 2017 at 1:17am PDT Other

When a gunman attacked a casino in Manila last June, ISIS claimed credit. But Philippine police said the attacker was in debt, had a gambling problem, and had recently been laid off. The terror group had nothing to do with it. Another questionable claim of responsibility came on Monday. Multiple ISIS communication channels asserted that a "soldier of the Islamic State" carried out the massacre in Las Vegas, but the terror group provided no evidence to support the claim, and analysts immediately heaped doubt on it. The FBI said it has found "no connection with an international terrorist group." Police believe the gunman acted alone. So is the tenuous claim of responsibility newsworthy? Some news

Facebook says an estimated 10 million people in the U.S. saw at least one of the 3,000 political ads it says were bought by accounts linked to the Russian government. The figure, disclosed by Facebook for the first time on Monday, underscores how effective Russian meddling on social media could be with even a minimal investment. The ad buyers spent just $100,000 over two years to target 10 million people, according to figures Facebook has provided about the ad buys. That's an audience roughly equivalent to the population of Michigan. More than half of the ads were seen after the 2016 presidential election, indicating that Russian efforts went well beyond meddling during the campaign and may continue

"Five, four, three, two, one!" Pop star Demi Lovato is doing her best impression of Nasa's mission control as she records an insert for a forthcoming TV show. Standing in an alcove of BBC Broadcasting House, as staff mill around with laptops and coffee cups, she's really giving it some welly - which is impressive considering she has literally no idea what she is counting down from, or to. "Yeah, I don't know what that was for," laughs Lovato as she sidles into a seat to chat about her new album, Tell Me You Love Me. It's the 25-year-old's sixth record since she began her career as a child actress on the TV show Barney and Friends. Since then, she's starred in Camp Rock alongside the Jonas Brothers,

A free flu vaccination programme in schools is being extended to include children in Year 4. The annual campaign in Wales covers children aged from two up to nine, pregnant women, over-65s and those with certain medical conditions. Children in nursery, reception and Year 1 to 4 can all now receive nasal spray vaccines in school. Younger children and other eligible groups can have it at GP surgeries and some community pharmacies. In August, the Welsh Government announced all primary school children would be offered the flu vaccine within two years. Last year, 74 people were admitted to intensive care units in Wales with suspected influenza. Public Health Minister Rebecca Evans AM said: "Influenza