MADISON, Ind. (AP): Police in a southeastern Indiana city say a second pipe bomb has exploded in less than two weeks and they think the criminal justice system is being targeted.

Madison Police Chief Dan Thurston says the latest explosion was early Wednesday in the driveway of the home of Jefferson County Superior Court Judge Mike Hensley. It left black scorch marks. The first explosion happened March 7 across the street from the Madison Police Department. Police believe the incidents are connected.

Thurston says police see the bombings as a “directed threat to our criminal justice system.” There were no injuries in either incident.

Hensley’s son, Evan Hensley, said his father “is holding up well.” Federal, state and local authorities are investigating.