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British IndyCar driver Dan Wheldon has died after a horrific 15-car crash at the Las Vegas Motor Speedway on Sunday which left the motor sports world in shock.

The following is a selection of reaction from the world of motor sport to the death of Britain's Indianapolis 500 champion Dan Wheldon after a 15-car crash at the Las Vegas Indy 300 in Las Vegas on Sunday:

British IndyCar driver Dan Wheldon died from injuries sustained in an horrific crash at the Las Vegas Motor Speedway on Sunday, race organisers said.

Starting in the 34th position among 34 cars in the race on Sunday, Dan Wheldon worked his way up the pack before a massive, fiery 15-car wreck Sunday. Wheldon, 33, and a two-time winner of the Indianapolis 500 -- including a win this year -- died from injuries suffered in the wreck after his car flew another in Lap 13 of the race.

Racing is a dangerous sport, where crashes become part of the thrill, but the sport took a turn for the worse today when British IndyCar driving Dan Wheldon was in a crash and later died from injuries after his car sailed through the air in a massive 15-car wreck Sunday at the Las Vegas Indy 300.

Philadelphia police, on Saturday, discovered four mentally disturbed adults - three males and one female - suffering from malnutrition. The four were found locked in a secret room in an apartment basement.

Republican presidential hopeful Herman Cain raised $2.8 million in the third quarter, an increase in campaign contributions that reflects his growing stature as a viable candidate in the 2012 race to the White House.

Britain's Paul Casey withdrew before the start of Saturday's third round of the McGladrey Classic at St. Simons Island in Georgia because of a stomach ailment, effectively costing him his PGA Tour card for next season.

After weeks of discussion and speculation, Tim Tebow is finally the starting quarterback of the Denver Broncos. And it appears the stars are aligned for the QB to have a big game at Sun Life Stadium.

Occupy Miami had a peaceful first day on Saturday, with many protesters showing up for rallies in downtown Miami, according to local media reports.

Christopher Chaney, the man suspected of leaking Scarlett Johansson's nude photos, has not only been spying on Johansson since earlier than 2011, but he also said he is addicted to seeing [the] behind-the-scenes of what was happening in celebrities' lives.

Hip Hop star Rick Ross reportedly suffered multiple seizures within six hours on Friday — forcing his planes to divert — and he was hospitalized in Alabama, according to media reports. The medical scare prompted many celebrities, including his hip hop fued 50 cent, to comment.

San Diego, which has been touted as having one of the best climates in the United States, is also the luckiest, according to a new ranking.

In a bizarrely scary turn of events, American rapper Rick Ross was rushed to hospital twice after suffering seizures while on board his flight to Memphis, where he was scheduled to perform on Friday.

Kei Nishikori underlined his imminent status as Japan's highest-ranked player ever on the ATP Tour with a commanding 6-4 6-3 victory over Ukraine's Alexandr Dolgopolov to reach the semi-finals of the Shanghai Masters Friday.

Whether or not his Tigers advance, Major League Baseball has been a winner in his team's American League Championship Series against the Texas Rangers, Detroit manager Jim Leyland said on Friday.

Watch this heartwarming video of 9-year-old Skylar Johnson who is surprised by her military dad at her elementary school's spelling bee.

Mitt Romney's campaign raised more than $14 million in the third quarter, signaling that the Republican U.S. presidential hopeful's fund-raising remains robust despite big swings in opinion polls.

Photos of Soyuz rocket ready for takeoff at Guiana Space Center in Sinnamary, French Guiana.

A New York pastor has been arrested and accused of fraudulently cashing pension checks worth nearly a quarter-million dollars sent to a school teacher who died more than a decade ago, authorities said on Thursday.

Christopher Chaney, who has been accused of hacking into some Hollywood celebrities’ email accounts and peeking into their private photos and other information, such as movie scripts, offered a heart-felt apology and claimed that he just could not stop doing so, for he was addicted.