RALEIGH, N.C. (AP) — Thousands of newly released documents about water contamination at Camp Lejeune add to the evidence that the military long knew about tainted tap water blamed for deaths and illnesses among Marines and their families, and that officials covered up the information for years, a North Carolina congressman said Friday.

“For the last 30 years, instead of saying there could be health effects and or even we don’t know what the health effects are, they’ve minimized it,” said Democratic Rep. Brad Miller.