MILWAUKEE -

A Sikh group is offering $10,000 to anyone who serves an Indian head of state with federal lawsuit papers on his expected visit to Wisconsin next week.

Sikhs for Justice filed a civil lawsuit this week in Milwaukee. One defendant is Parkash Singh Badal, chief minister of the Indian state of Punjab. The other is his son, Sukhbir Singh Badal.

The advocacy group alleged the Badals oversee a state police force that uses torture.

The group was unable to serve the elder Badal when he visited Wisconsin last year. They're offering $10,000 to whichever professional server or community member serves him this time.

Parkash Singh Badal's media adviser said the case is "politically motivated" but wouldn't confirm whether his client will be in the U.S. next week.