Lindsay Lohan Tested Positive for Cocaine

9/17/2010 9:00 PM PDT

Lindsay Lohan Back to Jail... Really? -- Cocaine

Lindsay Lohan tested positive for cocaine last week and that is why she failed her drug test ... sources tell TMZ.


As we first reported, Lindsay failed the court-mandated drug test -- and according to the terms of her probation, she will go back to jail for 30 days as a result.

Sources close to Lindsay say she's been telling friends she's "getting her life together." However, we're also told, she's surrounded herself with some "bad influences."

Story developing...