Border Patrol commander Gregory Bovino is expected to leave Minneapolis on Tuesday as the Trump administration reshuffles leadership of its immigration enforcement operation and scales back the federal presence after a second fatal shooting in the city by federal officers.

Federal prosecutors have served six grand jury subpoenas to Minnesota officials as part of an investigation into whether they obstructed or impeded federal law enforcement during a sweeping immigration operation in Minneapolis-St. Paul area.

President Donald Trump has threatened to invoke the Insurrection Act and deploy troops to quell persistent protests against Immigration and Customs Enforcement officers in Minneapolis.

A federal officer has shot a man in the leg in Minneapolis after being attacked with a shovel during an arrest Wednesday.