Take a close look at the photo of T.I. getting arrested ... and focus on the styrofoam cups in the front and back cupholders ... although cops aren't saying which controlled substance they found in the car, there seems to be evidence of Sizzurp ... aka purple drank ... aka codeine syrup.

 -- A form of codeine falls under the class of drugs for which T.I. and his wife, Tameka "Tiny" Cottle, were arrested.

-- Codeine is the main ingredient in Sizzurp, which is a growing problem in the South.

-- Sizzurp is typically ingested in styrofoam cups ... it's become a "thing" in the hip-hop community.

Cops won't say specifically which drug they found, though our sources say it's the class of drugs that does indeed include the main ingredient for Sizzurp.

WASHINGTON, DC - Secretary Clinton cites strong U.S. partnership with Trinidad and Tobago in her statement acknowledging the Republic of Trinidad and Tobago's Independence Day.

Statement by Secretary Clinton:

On behalf of President Obama and the people of the United States, I congratulate the people of Trinidad and Tobago as you celebrate your 48th anniversary of independence this August 31.

The United States and Trinidad and Tobago enjoy a strong partnership covering a wide range of issues and reinforced by the extensive ties of family and friendship between our people. I was honored to visit Trinidad and Tobago on one of my first trips as Secretary of State to attend the fifth Summit of the Americas in Port-of-Spain, and I look forward to continuing ...

The sister of Mel Gibson's ex-girlfriend may have leaked the pair's audio recordings to RadarOnline.com, The Hollywood Reporter reported last night.

Several sources confirmed to THR that Oksana Grigorieva's younger sister, Natalie, is being examined for her role in the audiotape leaks.

"I suspect that if the authorities look at the sister, they'll find a wire transfer or a check to her from the Web site," a source told THR. Another source claimed Natalie had been shopping the tapes to other media outlets before selling them to Radar.

"All the tabloids said no to the deal because they were asked to purchase the audio tapes before hearing them," another source told the trade.

If Oksa...

President Obama apologized yesterday to former USDA official Shirley Sherrod over her ouster amid a racially tinged firestorm that has enveloped the White House.

But even as Obama said he was sorry, conservative blogger Andrew Breitbart, who sparked the uproar by posting a heavily edited video clip of Sherrod addressing the NAACP, remained unrepentant.

Breitbart has said he put the clip online to illustrate that racism exists in the NAACP, an argument he was using to counter allegations by the civil-rights organization of racism in the Tea Party movement.