(CNN) -- South African teenager Caster Semenya won the women's 800 meters gold medal at the World Athletics Championships in Berlin, just hours after the sport's governing body asked for the 18-year-old's gender to be verified.



Semenya celebrates her gold, which came just hours after the IAAF called for a gender test on the athlete.



Semenya crushed her rivals by streaking away to secure victory in a time of one minute 55.45 seconds -- the best time in the world this year.



Defending champion Janeth Jepkosgei of Kenya took the silver with Briton Jennifer Meadows claiming bronze.



However, the race was run amid controversy following the announcement by the International Amateur Athletics Federation (IAAF).  Watch outrage over allegations »



"The gender verification test is an extremely complex procedure," said IAAF spokesman Nick Davies -- who revealed the question of Semenya's gender was first raised after her astonishing African junior championship displays.



"In the case of this athlete, following her breakthrough in the African junior championships, the rumors, the gossip were starting to build-up," Davies added to reporters.



There have been precedents in such cases, the most famous being that of Polish athletics great Stella Walsh, who won Olympic gold in the 100 yards at the 1932 Olympics and silver in the same event in the 1936 Olympics in Berlin.



However, after she was shot dead during an armed robbery in 1980, the subsequent autopsy revealed she possessed male genitalia, although she also had female characteristics as well.



Meanwhile, Yusuf Saad Kamel secured Bahrain's first-ever medal with a superb late surge to claim gold in the men's 1,500 meters.



Kamel, who until 2003 competed for Kenya as Gregory Konchellah and is the son of former two-time world 800m champion Billy, won in a time of three minutes 35.93 seconds.



Ethiopia's world indoor champion Deresse Mekonnen claimed a surprise silver with defending champion Bernard Lagat, also Kenyan-born but now competing for the United States, in bronze.



""It's amazing to win a world title just like my father. The only thing left for me to do is to beat his times and win more medals and get to the front of my family," Kamel told reporters.



Olympic silver medallist Asbel Kiprop of Kenya could only finish fourth after leaving himself too much to do down the home straight.



Elsewhere, sprint king Usain Bolt produced an effortless run to coast into the men's 200m final and remain on course to claim a world sprint double to add to his Olympic sprint double from Beijing.



The 22-year-old Jamaican, who set a new world record of 9.58 seconds in winning the 100m on Sunday eased home to win his semifinal in 20.08 seconds and only injury looks like depriving him of gold.



"I just try and get through and make it as easy as possible," Bolt told reporters. "I've been training for this for a long time now. I know what I have to do."



There was more sprint joy for Jamaica when Bolt's compatriot Brigitte Foster-Hylton ran a season's best time of 12.51 seconds to finally claim gold in the women's 100m hurdles.



The 34-year-old, who won world bronze in Helsinki in 2005 and silver in Paris in 2003, secured her first global title by edging out Canada's Olympic bronze medallist Priscilla Lopes-Schliep.



Another Jamaican, Delloreen Ennis-London, took the bronze medal.



However, the biggest cheer of the night at an electric Olympic Stadium was reserved for Germany's Robert Harting, who dramatically won the men's discus gold with his sixth and final throw of 69.43 meters.



Poland's long-time leader Piotr Malachowski won silver with a throw of 69.15m with defending world and Olympic champion Gerd Kanter of Estonia claiming the bronze with 66.88m.



The victory was host nations Germany's second of the championships after Steffi Nerius claimed gold in the women's javelin on Tuesday.
Who won Bahrain's first-ever medal? who claimed gold in men's 1,500m? Who did the IAAF ask to undergo a gender test? What event did Caster Semenya win gold in? What country got the first ever medal? who asked for gender test? Who won a women's gold at World Athletics Championships?
Caster Semenya Yusuf Saad Kamel Caster Semenya women's 800 meters Bahrain's IAAF Caster Semenya
question: Who won Bahrain's first-ever medal?, answer: Caster Semenya | question: who claimed gold in men's 1,500m?, answer: Yusuf Saad Kamel | question: Who did the IAAF ask to undergo a gender test?, answer: Caster Semenya | question: What event did Caster Semenya win gold in?, answer: women's 800 meters | question: What country got the first ever medal?, answer: Bahrain's | question: who asked for gender test?, answer: IAAF | question: Who won a women's gold at World Athletics Championships?, answer: Caster Semenya