According to multiple sources, Tomlinson collapsed from a "suspected heart attack" on Wednesday afternoon.
The singer's younger sister Felicite Tomlinson died in her West London flat on Wednesday following reports of a cardiac arrest.
Actor and talkshow host James Corden said the news was "incredibly sad" and tweeted to Tomlinson that he is "not on your own in this".
In a statement, Scotland Yard said: "Police were called by London Ambulance Service at 12.52 on Wednesday March 13 to a residential address ... following reports of a female in cardiac arrest".
Louis is said to be "devastated and distraught" by the tragic news, only three years after his mother died from leukaemia.
It's the second tragedy to hit the Tomlinson family in recent years.
"A female believed to be 18 was pronounced dead at the scene".
Tesla Model Y event in 3 minutes
Suppliers were originally told that production would start on the vehicle in November 2019, sources told Reuters past year . A lot is known about the Model Y thanks to the loose lips of CEO Elon Musk talking about it over the past three years.
Louis' six siblings (from left) Felicite, Lottie, Phoebe, Daisy and Ernest.
Felicite was well-known on social media, with 1.3 million followers on Instagram.
The results of a full post-mortem examination will be released in days.
Police officers are investigating the teenager's death, which they are now treating as "unexplained".
Her last social media post came on Sunday (March 10).
He has canceled his scheduled appearance on UK TV for the yearly charity event Comic Relief.
At the time he described the performance as "harder than I ever imagined".
I'm tempted to write "Since when do congressional Republicans defy Trump?" but today would be the wrong day to make that point . Democrats speculate that the report might have enough evidence to support an impeachment effort against the president.
Yesterday , there were many reports of people being unable to access certain apps across the social media platforms. In addition to Facebook , irate users noted that the outage likewise affected Instagram and WhatsApp.
We'll have to see if Marvel comes through with an explanation because the fans aren't staying quiet - peep the reactions below. This is a touching tribute to the Falcon, as Sam was shown running a support group for military veterans in Winter Soldier .
Campaigners said 15,000 people took part in protests in more than 60 towns and cities across the United Kingdom in February. Elsewhere in New Zealand, Wellington students showed up in force, and of course, they wielded many excellent signs.
If MPs opt for extending article 50 to continue deliberations, it still will not solve the problems May's government is facing. Macron said the British government has "to explain to us what the point of it is, and in particular whether it adds anything".
According to Newshub, there were 29 shots heard inside the mosque, with multiple injured and reports of six people killed. In response to "a serious ongoing firearms incident", police said all schools have been placed in lock-down.
Barcelona and Juventus come next in the betting ahead of Liverpool , United and Spurs , with Ajax and Porto the two big outsiders. The quarter-final first-legs will be played on April 9-10 with the return legs scheduled for April 16-17.
Small changes are coming to Major League Baseball this season with bigger ones arriving in 2020 the league announced Thursday . The derby will include $2.5 million in prizes overall giving more incentive for the big-name stars to participate.
Cyclone Idai batters Mozambique coastal city, several injured
Weather service Windy.com showed that the storm was off the east coast of Mozambique, with winds already in excess of 100km/h. The group has said it was ready to deploy 70 staff, along with 4x4 vehicles, boats, and jetskis to help with rescue efforts.
Markets Right Now: Tech, health lead stocks gains at midday
And there are those that won't be comfortable until the S&P 500 finally breaks through resistance between 2,800 and 2817. Stocks were helped by a US government report showing retail sales rose slightly in January after falling in December.