CELEBRITY
03/14/2013 01:49 pm ET Updated Mar 15, 2013

Justin Bieber Rants About 'Countless Lies,' Rehab Rumors & Disses Lindsay Lohan (UPDATE)

Justin Bieber is not pleased with the amount of negative attention he's been receiving lately. After what he previously called a "rough week" in London, the 19-year-old pop star turned to Instagram this time to slam "countless lies in the press."

Bieber first posted a rant to Instagram, and quickly deleted it, but it didn't go unnoticed. He soon reposted a slightly edited rant:

"Everyone in my team has been telling me, 'keep the press happy' but I'm tired of all the countless lies in the press right now. Saying I'm going to rehab and how my family is disappointed in me," he wrote. "My family is beyond proud, and nothing's been said by them, my grandparents wouldnt know how to reach to press even of they did want to so that was a lie and rehab cmon."

Bieber continued writing that, as for anyone who believes he needs rehab, that's their "own stupidity."

"lol I'm 19 with 5 number one albums, 19 and I've seen the whole world. 19 and I've accomplished more than I could've ever dreamed of, i'm 19 and it must be scary to some people to think that this is just the beginning. I know my talent level and i know i got my head on straight," he wrote.

Bieber explained that he knows who he is and who he is not, and wrote that he doesn't care if people don't believe in him, because he believes in himself. "My friends believe, my family believe, my fans believe, and look where that's gotten me so far.. I'm writing this with a smile on my face and love in my heart," he wrote.

Bieber explained that he chose to address the stories instead of letting them linger, and adds:

I'm a good person with a big heart. And don't think I deserve all this negative press I've worked my ass off to get where I am and my hard work doesn't stop here... All this isn't easy. I get angry sometimes. I'm human. I'm gonna make mistakes. In gonna grow and get better from them. But all the love from you guys overcomes the negativity. I love u. Thanks

Bieber's rant didn't stop there -- at least not in the first post, which he quickly deleted. The first time around, he concluded the rant by writing that he's "growing up finding myself while having people watch me and criticise me everyday i think im doing pretty damn good.” And lastly in his first posting, he took a swipe at perpetually troubled actress Lindsay Lohan.

“And to those comparing me to Lindsay Lohan look at her 2012 tax statements ;).”

This is the second online rant Bieber has gone on in as many weeks. On March 6, he turned to Twitter to slam what he called "fake stories" about him. And this was before all of the real drama took place.

Just hours after he passed out backstage at his London concert and was rushed to hospital, Bieber almost got violent with the paparazzi. The singer lunged at photographers, and he evidently had to be restrained by his own bodyguard.

Video footage of the altercation showed Bieber angrily responding to a photographer's insults, by yelling "I'll f**king beat the f**k out of you."

Bieber and his manager continue to claim "there's nothing wrong with him," but despite their protests many are worried that the pop star is quickly unraveling and heading into dangerous territory.

UPDATE: Justin Bieber sort of apologized for throwing shade at Lindsay Lohan, telling TMZ:

"My post was only up for a few minutes but I realized right away that what I said at the end was wrong and distracted from what I was trying to say. I immediately deleted it and rewrote it so it would show what I was really feeling and those words are up now."

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