The family of pop star Rihanna has been thrown into a state of mourning.

Few hours after spending Christmas Day with family members in Barbados, Rihanna's cousin, Tavon Kaiseen Alleyne, was shot dead by an unidentified man.

Alleyne was walking in the St Michael’s area around 7pm on Boxing Day (26 December) when he was shot by an unidentified man several times, according to Nation News. He was 21.

He later succumbed to his injuries after being rushed to hospital in a private vehicle.

The eight-time Grammy award-winning singer paid tribute to Alleyne on Instagram, mourning him by posting a series of photos of her cousin while calling for an end to gun crime in the country.

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“RIP cousin,“ she wrote. “Can’t believe it was just last night that I held you in my arms! Never thought that would be the last time I felt the warmth in your body!!! Love you always, man!’

The “Work” singer also captioned the photos with an #endgunviolence hashtag.

Police are currently on the hunt for the shooter and have asked anyone with information to contact Crime Stoppers or the District A Police Station.

Gun crime has been rife in Barbados recently, with police confirming a significant increase with 22 of 28 murders committed there gun-related.

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