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.

The family of Mohamed Soliman, the suspect charged with throwing Molotov cocktails at people in Boulder, Colo., advocating for the release of Israeli hostages, has been taken into ICE custody, Department of Homeland Security (DHS) Secretary Kristi Noem announced Tuesday.

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