Lamar Odom Missing: Family And Friends Worried...

Lamar Odom has vanished and everyone in his life fears the worst -- that he's off somewhere on a drug binge ... TMZ has learned.

Sources connected to the NBA star tell us people on Lamar's side, and on the Kardashian side have not been able to find Lamar or contact him for nearly 72 hours -- and we're told the main concern is he's hiding out while doing crack cocaine.

As TMZ first reported ... Khloe Kardashian threw him out of the house Wednesday after attempting an intervention which Lamar squarely rejected.

We've already told you Lamar's been battling addiction for at least 2 years -- and even reluctantly agreed to go to rehab in San Diego a year ago ... although he bailed after 3 weeks.

Our sources tell us Lamar has gone off the hinges since basketball season ended and he became a free agent.

We're told his drug addiction is the core reason why his marriage to Khloe has fallen apart.

Lamar Odom Attacks Paparazzi, Trashes Car And Camera

Lamar Odom went absolutely nuts on 2 paparazzi in Hollywood this afternoon ... smashing a car, a camera ... and then fleeing the scene -- apparently with some of the destroyed camera gear.

The violent incident was captured on video ... where Mr. Khloe Kardashian was seen going into the back of a car belonging to one of the paps, and chucking all of the guy's equipment into the middle of a busy street.

He then walked across the street and smashed another photog's car with a metal bar, then picked up all the gear from the street and put it in his trunk.

Curiously, right after raging against the paps, Lamar also had a run-in with a fan -- and couldn't have been nicer.  

It's unclear why Lamar was so angry ... Lol

Khloe Kardashian and Lamar Odom Involved in Charity Scam?

Socialite and reality TV star Khloe Kardashian and her NBA star husband Lamar Odom are accused of running a charity scam.

According to an investigation by ESPN, eight charities connected with sports stars have allegedly misused the cash they rake in.

After his mother passed away from stomach cancer in 2004, Odom set up a charity to fund cancer research called Cathy’s Kids. But the ESPN investigation revealed that Cathy’s Kids hasn’t given a single penny to cancer research in the 9 years it has been in existence.

ESPN reports that Cathy’s Kids claims it has been “dormant for years,” despite the fact that ESPN found it is still actively fundraising.

Khloe and Lamar’s eBay store includes a reference to the Cathy’s Kids website. The ad’s text reads: “All auction items benefit Cathy’s Kids.”