Khloe Kardashian kept her marriage problems a secret from her family ''for quite some time''.

The 29-year-old reality star is known to be close to her sisters Kim and Kourtney Kardashian and mother Kris Jenner, but she is said to have kept it quiet from them that she and Lamar Odom - who have been married for nearly four years - have been having issues, amid allegations he has a serious drug problem.

A source told Us Weekly magazine: ''Khloe did keep her marriage issues with Lamar a secret from her family for quite some time - no one knew.''

Lamar was spotted returning home on Monday (26.08.13) ''looking gaunt'' after reportedly going missing for six days after Khloe kicked him out because he did not want to go to rehab.

His decision not to enter the facility is thought to be because basketball pre-season training camps are coming up soon, but following allegations the 33-year-old star has a drug problem, the Los Angeles Clippers are said to be refusing to re-sign him, according to TMZ.

NBA sources told the gossip website that Clippers team officials were keen to get Odom back on their roster over the summer after being impressed with his performances last season, but they found it tough to contact him.

And now following reports he has a drugs issue, they have filled up their roster after signing former Los Angeles Lakers star Antawn Jamison, meaning there is no space for Odom.