The logo of Brazilian meatpacker JBS SA is seen in the city of Jundiai, Brazil June 1, 2017. Picture taken June 1, 2017. REUTERS/Paulo Whitaker

SAO PAULO (Reuters) - Brazil Supreme Court Justice Gilmar Mendes on Friday denied a request to release from jail Joesley and Wesley Batista, the brothers who control the world’s largest meatpacker JBS SA.

The Batistas’ defense challenged the detention of the brothers after their arrest last week by federal police in a probe into the use of privileged financial information about JBS stocks and currencies in the Brazilian market.

A lower court denied another release request last week.

The brothers are accused of having used information about their plea bargain deal with Brazilian prosecutors to profit in financial transactions.