Former world heavyweight boxing champion failed test on the day of his loss to Fabio Wardley, promoter says.
Those arrested are linked to a faction of the Pakistani Taliban, known as the Tehreek-e-Taliban Pakistan.
Human Rights Watch and Amnesty International condemn Tunisia's 'assault on the rule of law'.
Modi's BJP-led alliance poised to sweep the legislative assembly election in Bihar, vote count trends show.
Moscow's troops push further into Pokrovsk but Ukraine is managing to fight on.
Rescuers in Indonesia have been searching for survivors of a landslide. Several people have been reported killed.
Venezuela's military is unlikely to be able to match US aggression. But President Maduro has other options, say experts.
A dam collapse in 2015 unleashed tonnes of toxic waste into a major river, killing 19 and devastating villages downstream.
House advances bill to release Jeffrey Epstein files amid Republican resistance and Trump's opposition to disclosure.
The besieged Palestinian enclave has the world's highest number of child amputees per capita.