MISSION – A Mission man accused of at least 18 crimes against children is behind bars.

Officials say 53-year-old Luis Nava, Jr. is set for arraignment for Wednesday.

Investigators accused him of committing sex crimes in the early 2000s.

The suspect was in his mid-30s at the time. Authorities are still searching for possible victims.

If you have any information, call the Texas Rangers at 956-565-7600.