"There is no precedent in the history of the United States for the type of collective family-based punishment," Eric Lee, an attorney for Soliman's wife and kids, said.

The family of the man accused of attacking a group of people Sunday with Molotov cocktails and a makeshift flamethrower has been taken into ICE custody and are being processed, a DHS official confirmed to CNN Tuesday.

Homeland Security Secretary Kristi Noem said the agency would be investigating whether Mohamed Sabry Soliman’s family had information about his alleged plot.