South Africa's Semenya has long attracted debate because of her powerful physique related to hyperandrogenism.
The Athletics Federation of India has formed a panel to investigate the matter and promised to take severe action against the two if found guilty after the investigation.
The Indians clocked 3 minutes and 04.05 seconds to finish second in 4x400m relay Heat 2.
Bolt promised to talk to Blake about the pressures of becoming Jamaica's main man in his absence.
Debutant Neeraj Chopra is one of a handful of Indian track or field athletes who has a realistic chance of a podium finish.
Bolt, 31, who retired from athletics after August's World Championships in London, has been busy preparing for a tilt at football.
Unheralded Tamil Nadu athlete Ayyasamy Dharun smashed the men's 400m hurdles national record and in the process grabbed a Commonwealth Games ticket on the concluding day of the 22nd Federation Cup National Senior Championships.
There was a shock in the men's 400m as all runners in the third heat of six, including two top favourites, were disqualified.
Usain Bolt hung up his sprinting boots after the 2017 IAAF World Championships.
Russian President Vladimir Putin's spokesman said he was "very glad" about the ruling which fell just eight days before the 2018 Olympics begin.
The 21-year-old American set the new mark at the low-level Clemson Invitational track meet to surpass the previous record of 6.39 second held by fellow American Maurice Greene.
Justin Gatlin, who has twice served bans for doping, said he had sacked Mitchell after hearing of the claims.
The IOC announced the decision after examining evidence of state-sponsored doping over several years.
Lui Lai-yiu is the first high-profile woman in socially conservative Hong Kong to tell of abuse as part of the #MeToo movement exposing sexual misconduct.
McLaren's comments came on a day when a Russian inquiry repeated the allegation against the former head of the Moscow drug-testing lab, Grigory Rodchenkov.
Alexander Zubkov, a hero in Russia after winning both the two-man and four-man bob in the Russian Black Sea resort, was disqualified and his results struck off.
Pistorius was imprisoned in July last year after being found guilty on appeal of murdering girlfriend Reeva Steenkamp on Valentine's Day 2013.