Hello. We have the latest from Turkey where the country has been rocked by a fifth night of protests after the main opponent to the country's president was jailed. From Arizona, the first person to receive a brain chip from Elon Musk's Neuralink company tells the BBC how it changed his life, and talks between the US and Russia on a potential Ukraine ceasefire are underway in Saudi Arabia. Plus, take a look at the Tiffany earrings worth almost $770,000 which have been recovered almost two weeks after an alleged thief swallowed them.

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Fifth night of fierce protests in Turkey after Erdogan rival jailed

Police used water cannons, tear gas and pepper spray to break up demonstrations. Credit: EPA

Police and protestors have clashed across Turkey during a fifth night of demonstrations against the imprisonment of the main rival to Turkey's president. Ekrem Imamoglu, the mayor of Istanbul, has been charged with corruption in allegations which he says are politically motivated. Even though elections in Turkey aren't due until 2028, Imamoglu was due to be selected as the presidential nominee for the main opposition party, the Republican People's Party's (CHP), in a vote on Sunday. President Recep Tayyip Erdogan has condemned the demonstrations - which have seen more than 700 people arrested - and accused the CHP of trying to "disturb the peace and polarise our people". 

• Who is Ekrem Imamoglu?: Find out more about the man to whom President Erdogan has already suffered his "worst defeat ever".

• Watch: Police use spray pepper spray on protesters in Istanbul. 

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• Live updates: To get the latest developments on this story as they happen, follow our live page.

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The man with Elon Musk's mind-reading chip in his brain

The chip in his brain allows Noland to play games online against his friends, something he feared he'd never be able to do again. Credit: BBC

Having a chip in his brain which can translate his thoughts into computer commands has changed Noland Arbaugh's life, after he was left paralysed in a diving accident. Last year, the 30-year-old became the first person to get such a device from US neurotechnology firm Neuralink. A handful of other companies also develop and implant these chips, but what catapulted Noland into the headlines is Neuralink's founder: Elon Musk.

And finally... in Florida

Avid readers of News Briefing may remember our report on the alleged thief who was believed to have swallowed some very expensive earrings, as his X-ray showed. Now, almost two weeks later, two pairs of Tiffany & Co diamond earrings worth $769,500 (£597,000) have been recovered. Police in Florida monitored Jaythan Gilder at an Orlando hospital for "more than a dozen days" before the earrings were expelled from his system. Despite their difficult journey, the earrings, as you can see here, appear relatively unharmed. You'll be glad to know that Tiffany's has since cleaned them.