Dallas Fire-Rescue and the Dallas Police Department responded to the ICE facility on North Stemmons Freeway in Dallas Friday morning on a report of a suspicious package. DFR confirmed that the hazmat team was investigating an unknown substance, but preliminary testing found that it was not dangerous.

A law enforcement source tells CBS News Texas the substance was corn starch.

Just after 8 a.m., hazmat personnel dressed in full protective gear could be seen approaching the facility.

A DFR spokesperson said that the FBI would be taking over the investigation.

The facility is the same one that was targeted by a shooter in September . A shooter who was targeting ICE agents killed two detainees and another hospitalized was hospitalized. The suspect, identified as Joshua Jahn , d

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