SIOUX FALLS, S.D. (KELO) — A Humboldt man – with a history of sex crimes against children – is back behind bars facing charges from two different sexual assault cases.

55-year-old Larry Richter is a convicted sex offender with cases dating back to 1987.

On August 11, authorities say Richter was at the Sioux Empire Fair and had sexual contact with a child under the age of 16.

Court documents say he was booked into the Minnehaha County Jail. Bond was set at $15,000 and was paid in full on August 15. But it wouldn’t be long before Richter was back behind bars.

Less than two weeks later, he was booked into jail for another case.

Court documents say in July 2021, Richter had sexual contact with a person over the age of 16 who was unable to give consent because of a physical or mental incapacity.

Richter is no stranger to charges like these.

He’s on the South Dakota sex offender registry for having sexual contact with four boys in 1987. The victims were nine and ten years old.

In 2007, Richter was charged with attempted sexual contact of a child under 16. However, the charge was dropped in exchange for a guilty plea to witness tampering.

And in January of 2010, he faced numerous charges of rape and sexual contact with a minor, which he pleaded not guilty to. A year later, the prosecutor dismissed all of the charges.

Richter’s current bond is set at more than $200,000.

Richter will have his initial arraignment on his charges from 2021 Tuesday morning.