GPS information from a Miami Beach police officer points to more fabrications in Justin Bieber's January DUI arrest, reports TMZ.

The arresting officer claims Bieber was drag racing with friend Khalil Sharieff, but newly released data from the squad car shows that the cop never went faster that 49 mph, even though he was allegedly tailing the speeding pop star.

Before he busted Bieber, the cop's speed was only 11 mph and once he hit the street where the "Broken" singer was said to be drag racing, he never went above 49 mph. Bieber and Sharrieff were both arrested for the reported race and other offenses.

The new GPS evidence adds another damaging blow to the officer's credibility and could weaken the prosecution case against Bieber. Lawyers representing Sharieff and Bieber both plan to question the officer's integrity in court. The cop has 15 misconduct allegations against him for everything from "offensive conduct/language" to holding a side job without the department's knowledge.

Bieber isn't totally in the clear either, though. A toxicology report confirmed that he wasn't drunk, but high on weed and prescription drugs. He was also speeding at one point in the night, just not when he was arrested. Around 1:20 a.m., Bieber raced through Miami, accelerating from 108 mph to 136 mph. By the time he left Set nightclub and was subsequently pulled over, his speed was 27 mph. 

Aside from drag racing allegations, Bieber is still staring down charges for DUI, resisting arrest and driving without a valid license. 

Earlier this week, Miami Dade County Judge William Altfield ruled to keep graphic images from Bieber's jail video under wraps to protect his privacy.  

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 (Photo: AP Photo/The Miami Herald, Walter Michot, File)