This video can not be played

A former gang leader is on trial in Las Vegas for the murder of Tupac Shakur, who died following a drive-by shooting on 7 September 1996.

The prosecution and defence have delivered their opening arguments as Duane "Keffe D" Davis, 63, faces one count of murder with a deadly weapon. He has pleaded not guilty.

The BBC's Shaimaa Khalil breaks down the key arguments from both sides as the long-awaited trial gets under way.

Watch: What we learned from opening statements in Tupac murder trial. Video, 00:01:54Watch: What we learned from opening statements in Tupac murder trial

Up Next. 'I want my brother back' - Tupac’s brother tells BBC murder trial won’t bring justice. Video, 00:01:42'I want my brother back' - Tupac’s brother tells BBC murder trial won’t bring justice

How was Tupac Shakur killed? Video, 00:00:47How was Tupac Shakur killed?

Prosecutor: Davis planned 'retaliation' in Tupac murder. Video, 00:00:32Prosecutor: Davis planned 'retaliation' in Tupac murder

Watch: Why has Trump shifted on North Korea? Video, 00:01:45Watch: Why has Trump shifted on North Korea?

BBC visits smouldering Kyiv market after Russian strikes. Video, 00:01:00BBC visits smouldering Kyiv market after Russian strikes

Why is Australia's mushroom killer back in court this week? Video, 00:01:16Why is Australia's mushroom killer back in court this week?

Moment family rescued after 16 hours floating on jet ski off Thailand. Video, 00:00:29Moment family rescued after 16 hours floating on jet ski off Thailand

Why is Selena Gomez being sued? Video, 00:00:42Why is Selena Gomez being sued?

Moment €9m worth of art stolen from Italy museum. Video, 00:01:01Moment €9m worth of art stolen from Italy museum

Watch: 'Carnage' in Stourbridge as houses destroyed by fire. Video, 00:00:59Watch: 'Carnage' in Stourbridge as houses destroyed by fire

Watch: What happens if Luigi Mangione pleads guilty today? Video, 00:01:43Watch: What happens if Luigi Mangione pleads guilty today?

BBC Verify speaks to woman who filmed ICE agent pointing gun at her. Video, 00:02:09BBC Verify speaks to woman who filmed ICE agent pointing gun at her