Ken Pagurek, the Federal Emergency Management Agency's Urban Search and Rescue chief, has resigned amid criticism over the agency's delayed response to Texas flooding and efforts by the federal government to dismantle the organization.

The head of FEMA’s Urban Search and Rescue branch, which runs a network of teams stationed across the country that can swiftly respond to natural disasters, resigned on Monday.

The head of FEMA's Urban Search and Rescue branch, Ken Pagurek, resigned on Monday, multiple sources confirmed to ABC News.