Rapper Dmx has been arrested in Miami, Florida for the second time in a week - after he was allegedly caught trying to buy drugs from an undercover police officer.

The star - real name Earl Simmons - was arrested on Monday on suspicion of driving without a valid licence and later released on bail.

But just four days later, Simmons landed himself in trouble with the law again. The hip-hop star was arrested on Friday for allegedly attempting to purchase $45 of cocaine and marijuana from a man, who turned out to be a cop taking part in a sting operation.

Simmons is currently being detained at Miami-Dade County jail, according to Allhiphop.com.

The star's legal woes this year are beginning to mount - he was charged with suspected drug possession and animal cruelty in May following raids on his Arizona home. And previous to that incident he was arrested for allegedly speeding down a Phoenix, Arizona freeway in January, clocking up a reported 114 miles per hour.