A 71-year-old Louisiana man was charged with 100 counts of first-degree rape after allegations surfaced of criminal sexual conduct involving minors dating as far back as the 1970s.

Deputies received a tip on April 1 that Harvey Joseph Fountain was sexually involved with juveniles in the Pineville area, the Rapides Parish Sheriff’s Office wrote in a Facebook post.

An investigation allegedly uncovered evidence supporting the allegations that Fountain had perpetrated the sexually-based crimes upon minors at various locations he had resided in the Pineville area. Deputies said the alleged crimes began in the early 1970s and continued through the early 1980s.

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Fountain was arrested on April on 50 counts of first-degree rape. Days later, additional victims were identified – the sheriff’s office hasn’t said how many – and the still-jailed Fountain was charged with an additional 50 counts of first-degree rape.

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He remains jailed on the initial $500,000 bond. Deputies said the investigation is still ongoing and more arrests or charges are possible.

The Associated Press contributed to this report.