Public health officials in Maryland say certain cancers appear to occur at younger ages among people living near Fort Detrick in Frederick, Md., than in people statewide.
Clifford Mitchell of the Department of Health and Mental Hygiene says investigators will probe deeper into the discrepancies involving liver, bone and endocrine cancers.
The most pronounced difference involves liver cancer. The median diagnosis age among people living near the Army installation from 2000 to 2007 was 55 years versus 65 statewide.
Mitchell says researchers will examine the cases in greater detail and look at others as far back as 1992.
The investigation reflects concerns about Agent Orange testing and industrial chemical dumping at Fort Detrick decades ago.
Toots and the Maytals frontman Frederick "Toots'' Hibbert was hit in the head on Saturday night, leaving him with seven stitches.