There's been a fourth arrest in the case of an 83-year-old man who was robbed and attacked in Pinellas Park.
Marquez Dunbar, 20, is charged with armed robbery.
He just got out of prison in November after serving a three-year sentence for carjacking.
Three teenagers were already facing charges for robbing and attacking Clark last week.
He was stabbed Tuesday morning after returning home from a trip to the drug store. His car was stolen later that night.
Clark is now recovering from his injuries.
Dunbar will appear in court Tuesday.
FOX 13 / WTVT-TV
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