It's no doubt been a tough day for singer Justin Bieber with the news that his friend, former NBA player Jackson Vroman, was killed yesterday,

Jackson died yesterday from injuries sustained in a car wreck, but no other details have been released to the media as yet. The sports star's former team, the Phoenix Suns, confirmed the news via Twitter, posting a picture of Jackson playing basketball with the message, "We are very saddened to learn of the passing of Jackson Vroman. Our thoughts are with his family during this time."

Justin and Jackson have been friends for years after meeting through mutual friends, and most recently were pictured together at last year's Cannes Film Festival.

In fact, just a couple of months ago Jackson posted a throwback picture of the pair at Cannes:

Although the Baby singer has yet to make any statement on social media since news of Jackson's death emerged last night, tributes have been pouring from other close friends. Among them is Reggie Bush, an American football player who famously dated Kim Kardashian for two years before she reportedly cheated on him with her now-husband Kanye West.

Reposting one of Jackson's old pictures on Instagram, Reggie wrote, "Love you bro I miss you already can't believe your gone I pray that God has mercy on your soul at the gates of Heaven and we meet again in the after life! I promise to continue our vision of Beach Volleyball Thursday's in your honor and I thank God for allowing me to spend time with you on your final days on earth!"

Such sad news, our thoughts are with Jackon's family and friends at this time.