London: Teen pop sensation Justin Bieber has paid tribute to late American-singer Tupac Shakur on his 40th birthday by posting a video online.
The 17-year-old singer honoured the rapper, who was killed in a drive-by shooting in 1996, by posting a footage from a 2009 interview which showed him talking about his love for the hip-hop legend, reported a website.
The `Baby` hitmaker added a link to a film which showed him talking about Shakur and singing along to his hits, writing, "It`s 2pac`s bday (sic)!... You know I`m a 2pac fan... 2pac4life," Bieber said.
Shakur was once named as the 86th Greatest Artist of all time by Rolling Stone Magazine and had sold over 75 million albums worldwide as of 2007.