Britain’s Olympic hopefuls have been urged not to go out for runs at night from their training camp in Belo Horizonte.
Team GB staff have addressed safety fears in a notice in their hotel.
“You can run from the hotel round the lake on designated running and cycle pathways.
“But please remember the sun sets at 7.30pm and it is not advisable to be running after dark.”
Team GB medal targets for Rio Olympics
Meanwhile, a low turnout is expected from Team GB’s athletes at Friday’s opening ceremony in Rio.
"It will be a fairly small delegation of athletes marching," admitted BOA chief executive Bill Sweeney.
"We've got a big crew still up in Belo Horizonte training and athletes who are competing 24 or 48 hours after the opening ceremony.
"So we expect the marching athletes to be in the region of about 55 or so. Given the fact that we've got a total team size of 366, it's quite a small number but their priorities are on competition."
