U.S. Olympic sprint champion Crawford handed two-year ban
April 19, 2013 -- Updated 1447 GMT (2247 HKT)
American sprinter Shawn Crawford won 200 meters gold at the Athens 2004 Olympic Games.
- U.S. sprinter Shawn Crawford given a two-year ban by U.S. Anti-Doping Agency
- Crawford punished for failing to give his location for three drugs tests in last 18 months
- Crawford won 200 meter gold at the 2004 Olympic Games
- It is unclear whether Crawford will appeal the sanction
(CNN) -- Sprinter Shawn Crawford might have been coming to the latter part of his athletics career, but his failure to inform doping regulators as to his "whereabouts" has landed the Olympic gold medalist with a two-year ban.
The American, who sprinted to 200 meter gold at the Athens 2004 Games, has been sanctioned after failing to provide the United States Anti-Doping Agency (USADA) with a location for drug testing three times during the past 18 months.
The "whereabouts" rule requires athletes in advance to tell regulators where they are for one hour every day and make themselves available at that time for a drug's test.
The ban means results recorded or prize money won by Crawford on or after November 17, 2012 have been scratched.
CNN contacted Crawford's representative to ask if he will appeal the ban, but the agent was not immediately available for comment.
Read: "We are with you Boston"
Just six days after bomb blasts rocked the Boston Marathon, London will hold its own race, pledging to observe a 30-second silence in solidarity with U.S. victims.
London prepares for marathon ahead of Boston bombings
The forecasted cost of the Olympics and Paralympics is £8.921 billion ($14.236 billion). The English capital became the first city to host the Games on three occasions.
London's Olympic legacy in action
"Shawn Crawford of Culver City, Calif., an athlete in the sport of track & field, has received a two-year suspension for committing an anti-doping rule violation in which he failed to file his whereabouts information," read a USADA statement.
"Crawford failed to comply with the whereabouts requirements and, as a result, accrued three whereabouts failures within an 18-month period.
"A whereabouts failure for National Testing Pool athletes includes failure to provide required quarterly whereabouts filings and/or failure to be available for testing due to inaccurate or incomplete information provided by the athlete.
"USADA is responsible for the testing and results management process for athletes in the U.S. Olympic and Paralympic Movement, and is equally dedicated to preserving the integrity of sport through research initiatives and educational programs."
As well as gold in Athens, which was clinched with a time of 19.79 seconds, Crawford won a silver medal as part of the U.S. 4 x 100 meter relay team.
He was awarded the silver medal in the 200m final at the Beijing Games of 2008 after Churandy Martina was punished for outside of his lane.
According to the Associated Press, Crawford later gave his medal to Martina.
Today's five most popular stories
Part of complete coverage on
From spectacular action at the Commonwealth Games , to high-speed drama on the race track, here are the week's best sporting images.
July 28, 2014 -- Updated 1606 GMT (0006 HKT)
Whisper it quietly, but after years of foreign domination the prospect of a French winner of the Tour de France is more than just a mere pipe dream.
July 28, 2014 -- Updated 1321 GMT (2121 HKT)
Seven years ago Steve Way was a 20 per day smoker and weighed a hefty 104 kg, but he led the marathon at the 2014 Commonwealth Games.
July 25, 2014 -- Updated 1317 GMT (2117 HKT)
After just one day of competition, a new sport has emerged at the Commonwealth Games in Glasgow: snapping selfies with the Queen.
July 25, 2014 -- Updated 2048 GMT (0448 HKT)
Inspirational cyclist Joanna Rowsell added another gold to her growing collection in the individual pursuit at the Commonwealth Games.
July 24, 2014 -- Updated 0404 GMT (1204 HKT)
At the opening ceremony of the Commonwealth Games in Glasgow, an actor upstaged the Queen by kissing a male dancer.
May 7, 2014 -- Updated 1200 GMT (2000 HKT)
Of course not. But former Fulham owner Mohamed Al Fayed seems to think the removal of Michael Jackson's statue was a very "bad" idea.
May 7, 2014 -- Updated 1636 GMT (0036 HKT)
Second-tier French side Clermont Foot appoint Helena Costa -- the country's first ever professional female coach of a male team.
April 25, 2014 -- Updated 1733 GMT (0133 HKT)
The All Blacks and their fans are focused on one thing, says Dan Carter: becoming the first rugby nation to win back-to-back World Cups.
April 4, 2014 -- Updated 1308 GMT (2108 HKT)
The 2002 bomb attacks in Bali had many victims -- including a touring rugby team from Hong Kong.
Photographer Danny Lyon spent three days with Muhammad Ali in 1972 and shares his best photos and memories of the champ.
February 25, 2014 -- Updated 1254 GMT (2054 HKT)
With a growing audience boosted by the drama of ice hockey on show in Sochi at the Winter Olympics, can the sport capitalize on its popularity?
January 20, 2014 -- Updated 1125 GMT (1925 HKT)
Her paintings may sell for thousands of dollars, but she is best known for a modeling shot 50 years ago that helped launch a business empire.