Getty

It appears CBS is taking another look at David Del Rio and his sexual assault allegation leveled against him by his "Matlock" co-star ... because TMZ has learned the studio has reopened its investigation.

TMZ broke the news ... Del Rio was booted from the hit show after the actor had been accused of sexually assaulting actress Leah Lewis on Paramount property back in October. Sonja Flemming/CBS

Now, multiple sources close to David tell TMZ ... the investigation was reopened prior to Thanksgiving ... and more parties have been interviewed, including David himself alongside his high-powered attorney, Shawn Holley .

In the fall, Del Rio was escorted off the Paramount lot and canned the same day the complaint was lodged ... CBS Studios confirmed at the time his cha

See Full Page