WILLIAMSPORT, Pa. -

Pennsylvania law enforcement authorities said they've conducted checks of registered sex offenders who live near where the Little League World Series is being played.

The U.S. Marshals Service said Wednesday the canvass this week of the homes of 164 offenders within 20 miles of the baseball tournament in Williamsport found five potential violations.

Pennsylvania's version of Megan's Law requires certain offenders to register through the state police and report changes of address and other information.

The checks are part of a program called Operation Safety Net, which began four years ago. So far, it has resulted in more than 6,000 unannounced compliance checks and generated more than 150 arrests.

The checks occurred Monday and Tuesday and were conducted with the help of local and state officers.

The Little League World Series began Thursday.