Adam Peaty sets Britain's first world record of the 2016 Olympics, GB miss out on cycling medals, plus a round-up of news from day one.

An Iranian nuclear scientist detained since coming back from the US in 2010 has been executed, his family tells the BBC.

Rebel groups in Syria say they have broken a government siege of the crucial northern city of Aleppo but the army says it has pushed them back.

Just 22 people charged with offensive behaviour at football matches have completed a government-backed scheme to address their attitudes.

The Scottish government is urged to remove teenagers aged 16 to 18 from the scope of its named person scheme.

Former deputy PM Nick Clegg says Michael Gove was behind the Sun's "Queen Backs Brexit" story, while Labour leader Jeremy Corbyn is accused of being "lukewarm" on the EU, in a BBC documentary.

Kenya's anti-doping agency says it will investigate claims an athletics official offered to warn athletes about drug tests in return for money.

Thousands of seismic sensors monitoring geological activity are vulnerable to cyber attack, suggests research.