A swimming instructor in southwestern Germany has been arrested on suspicion of sexually abusing several children, and prosecutors say they fear there may be many more cases.

News agency dpa reports that the 33-year-old man from Baden-Baden was arrested in late September after several 5-year-old girls' parents filed complaints. Investigators searched his apartment and found videos made by the man.

He was arrested over six suspected cases this year and last.

Michael Klose, a spokesman for prosecutors, told n-tv television Friday that experience shows "that people who have pedophile inclinations don't leave it at one or a few cases" and officials fear "that many more cases will come to light, but that is in the realm of speculation at present."