LOS ANGELES (CBS) — Fans are marking the third anniversary of the King Of Pop’s death Monday with a flood of online tributes and thousands of roses sent to his grave.

Michael Jackson was just 50 years old when he died on June 25, 2009, much too soon for his legions of fans remembering the King of Pop on Twitter.

Jackson’s daughter, Paris Jackson, tweeted, “RIP Michael Jackson..Dad you will forever be in my heart

Pop sensation Justin Bieber also wanted to remember Jackson. “RIP to the best that ever did it. RIP to the KING…RIP Michael Jackson. You will never be forgotten. #INSPIRATION,” his tweet said, and retweeted nearly 25,000 times by 1:30 p.m. Monday.

Rapper Wiz Khalifa tweeted, “3 years ago today the world lost a legend. RIP Michael Jackson. Your music lives on for you. Thank you for everything!” That tweet was retweeted more than 20,000 times.

Jackson’s personal physician, Conrad Murray, was ultimately found guilty of involuntary manslaughter in connection with Jackson’s death and was sentenced to serve four years in prison.

The tributes were not just online. A group of fans based in Los Angeles told TMZ.com they raised $30,000 so they could have more than 10,000 roses delivered to Forest Lawn Memorial Park in Glendale, where Jackson was buried. TMZ says after Monday, those roses will be sent on to senior centers and other places where they can brighten someone else’s day.