A man has been arrested on suspicion of murder in the disappearance of former Olympic sprinter Yulia Balykina of Belarus.
Balykina, who ran in the 100 meters and 4x100 relay at the 2012 Olympics in London, has been missing since last Wednesday.
Investigators said in a statement that a search of her residence and car turned up "traces which together with other collected materials indicate a murder has been committed."
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They said a suspect, identified only as Dmitry V., was arrested. He was identified as Balykina's former boyfriend.
The 31-year-old Balykina was a national champion in the 100 and 200 meters, but her career suffered a blow when she received a two-year doping ban in 2013. Balykina's suspension ended in July. She had been working as a coach.