Renee Nicole Good, the mother of three shot and killed by a federal agent after allegedly swerving her car toward him, worked as a Minneapolis-based immigration activist serving as a member of "ICE Watch," federal sources told Fox News.

Good died on Wednesday after allegedly moving her car toward agents in what the Department of Homeland Security (DHS) described was an act of "self defense."

Homeland Security sources told Fox News that the group aims to monitor, track, interfere and oppose ongoing federal immigration enforcement operations. The group is present in multiple sanctuary cities across the country.

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While the group typically refers to themselves as "legal observers," sources said members will often attempt to interfere with federal operations.

According to DHS, Good followed federal ice agents to two other locations prior to the shooting and was blocking the roadway to interfere with ongoing enforcement in the area.

Federal authorities are looking into these groups to determine their sources of training and funding.

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Video circulating online shows an ICE officer approaching Good's stopped SUV and attempting to open the driver's side door before the vehicle drives forward. A second agent standing in front of the vehicle then fires multiple shots at close range.

ICE Watch-style networks have been linked to multiple confrontations with federal agents throughout the country, including incidents involving individuals using vehicles to block or strike officers.