(Fond du Lac) Cash bond was set at $1000 for a Berlin man suspected of leading Fond du Lac County Sheriff’s deputies on a high speed chase during his initial court appearance this week. Joseph Walker is facing charges of Fleeing an Officer and Obstruction. Walker reportedly told deputies as was taken into custody that he saw bright lights and panicked. Prosecutors say at the time he was wanted for a domestic incident and taking a vehicle in Green Lake County. A preliminary hearing is scheduled for Friday.